PostgreSQL 17

对于希望从任何以前的版本迁移数据的人来说，需要使用pg_dumpall进行转储/恢复，或者使用pg_upgrade或逻辑复制。有关迁移到新主要版本的通用信息，请参阅第 18.6 节。

版本 17 包含许多可能影响与以前版本兼容性的更改。请注意以下不兼容项：

SQL injection in PostgreSQL logical replication ALTER SUBSCRIPTION ... REFRESH PUBLICATION allows a subscriber table creator to execute arbitrary SQL with the subscription's publication-side credentials. The attack takes effect at the next REFRESH PUBLICATION. Within major versions 16, 17, and 18, minor versions before PostgreSQL 18.4, 17.10, and 16.14 are affected. Versions before PostgreSQL 16 are unaffected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.10：在逻辑复制源检查中正确引用对象名称

Stack buffer overflow in PostgreSQL module "refint" allows an unprivileged database user to execute arbitrary code as the operating system user running the database. A distinct attack is possible if the application declares a user-controlled column as a "refint" cascade primary key and facilitates user-controlled updates to that column. In that case, a SQL injection allows a primary key update value provider to execute arbitrary SQL as the database user performing the primary key update. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：避免 contrib/refint 的 check_foreign_key() 中解引用 NULL 指针
• 17.10：防止 contrib/spi 中的 SQL 注入和缓冲区越界写

Uncontrolled recursion in PostgreSQL SSL and GSS negotiation allows an attacker able to connect to a PostgreSQL AF_UNIX socket to achieve sustained denial of service. If SSL and GSS are both disabled, an attacker can do the same via access to a PostgreSQL TCP socket. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

发布说明中的提及：

• 17.10：防止处理启动包时发生无界递归

Covert timing channel in comparison of MD5-hashed password in PostgreSQL authentication allows an attacker to recover user credentials sufficient to authenticate. This does not affect scram-sha-256 passwords, the default in all supported releases. However, current databases may have MD5-hashed passwords originating in upgrades from PostgreSQL 13 or earlier. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.10：在认证代码中使用时序安全的字符串比较

Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets(), PQfn(..., result_is_int=0, ...) stores arbitrary-length, server-determined data into a buffer of unspecified size. Because both the \lo_export command in psql and pg_dump call lo_read(), the server superuser can overwrite pg_dump or psql stack memory. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：client。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.10：将 PQfn() 标记为不安全，并避免在 libpq 内部使用它

SQL injection in PostgreSQL pg_createsubscriber allows an attacker with pg_create_subscription rights to execute arbitrary SQL as a superuser. The attack takes effect when pg_createsubscriber next runs. Within major versions 17 and 18, minor versions before PostgreSQL 18.4 and 17.10 are affected. Versions before PostgreSQL 17 are unaffected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：client。

官方受影响分支记录：17。

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.10：在 pg_createsubscriber 中正确为订阅名称加引号

Symlink following in PostgreSQL pg_basebackup plain format and in pg_rewind allows an origin superuser to overwrite local files, e.g. /var/lib/postgres/.bashrc, that hijack the operating system account. It will remain the case that starting the server after these commands implicitly trusts the origin superuser, due to features like shared_preload_libraries. Hence, the attack has practical implications only if one takes relevant action between these commands and server start, like moving the files to a different VM or snapshotting the VM. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：client。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.10：防止 pg_basebackup 和 pg_rewind 中的路径遍历

Externally-controlled format string in PostgreSQL timeofday() function allows an attacker to retrieve portions of server memory, via crafted timezone zones. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.10：防范 timeofday() 和 pg_strftime() 中的恶意时区名

Integer wraparound in multiple PostgreSQL server features allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds. This may execute arbitrary code as the operating system user running the database. In applications that pass gigabyte-scale user inputs to the relevant database functions, the application input provider may achieve a segmentation fault. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 PL/Perl 和 PL/Tcl 内存分配计算中的整数溢出
• 17.10：修复内存分配计算中的多处整数溢出问题
• 17.10：拒绝 ts_headline() 中过长的选项
• 17.10：防范 contrib/intarray 的 query_int 类型以及 contrib/ltree 的 ltxtquery 类型中的字段溢出
• 17.10：防范 contrib/ltree 的 lquery 类型中过长的值

Missing authorization in PostgreSQL CREATE TYPE allows an object creator to hijack other queries that use search_path to find user-defined types, including extension-defined types. That is to say, the victim will execute arbitrary SQL functions of the attacker's choice. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.10。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.10：创建多范围类型时，确保用户在为该多范围类型指定的模式上拥有 CREATE 权限

Missing authorization in PostgreSQL logical decoding allows a non-superuser holding REPLICATION privilege to dlopen any file visible to the operating system account running the server, via the choice of logical decoding plugin. This in turn runs arbitrary code as that account. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：将逻辑解码输出插件限制为新服务器参数 output_plugin_libraries 指定的集合

Missing authorization in PostgreSQL DDL commands allows an object creator to achieve denial of service against ALTER and DROP of the type, via creating a dependency on the type. Many DDL operations did check the privilege, but assigning a range subtype and referencing the type from an SQL expression did not. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

发布说明中的提及：

• 17.11：在此前漏检的场景中检查数据类型的 USAGE 权限

Incorrect ownership assignment in PostgreSQL ALTER TABLE ALTER TYPE command reassigns ownership of dependent statistics objects to the current user. This wrongly allows the table owner to run DROP STATISTICS and ALTER STATISTICS via this improper ownership. It wrongly denies those commands to the prior statistics object owner. DROP TABLE remains able to remove statistics objects, so this exploit achieves nothing in many ownership arrangements. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

发布说明中的提及：

• 17.11：在 ALTER TABLE 重建扩展统计信息对象时保留其所有权

Untrusted data inclusion in PostgreSQL psql COPY may allow a server administrator to elicit execution of data lines as psql commands, via error injection. If the "COPY FROM STDIN" or "\copy FROM STDIN" command fails before the server indicates that it awaits input rows, psql processes the in-line data rows as psql commands. "COPY FROM" with a filename is unaffected. The server administrator has no inherent control over the data rows, so a complete attack requires the attacker to separately acquire control of both the server and the data rows. Alternatively, an attacker controlling data rows alone might complete an attack through a coincidental error that they don't control. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：client。

官方受影响分支记录：17。

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 psql：跳过脚本中的 COPY ... FROM STDIN 命令后面的内联数据，即使 COPY 在发送 PGRES_COPY_IN 前失败

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.8。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.9：避免在对“经过 TOAST 处理”的数据应用 substring() 时误报无效编码
• 17.8：修复多字节字符长度验证不充分的问题

Heap buffer overflow in PostgreSQL pgcrypto allows a ciphertext provider to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.8。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.8：修复 contrib/pgcrypto PGP 解密函数中的缓冲区溢出问题

Missing validation of type of input in PostgreSQL intarray extension selectivity estimator function allows an object creator to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.8。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.8：增强选择率估算器在被附加到接受非预期数据类型的操作符时的防护

Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.8。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.8：防止 oidvector/int2vector 出现意外的维度

Heap buffer overflow in PostgreSQL pg_dump of long function transform lists allows an object creator to execute arbitrary code as the operating system user running pg_dump, via a crafted transform list. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：client。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：移除 pg_dump 关于 pg_proc.protrftypes 不可能包含超过 FUNC_MAX_ARGS 个条目的假设

Untrusted data inclusion in pg_dump in PostgreSQL allows a malicious superuser of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql \restrict meta-command input expansion. The fix for CVE-2025-8714 introduced \restrict and \unrestrict to block this attack, but \unrestrict itself was sufficient for an attack. pg_dumpall is also affected. pg_restore is affected when used to generate a plain-format dump. Non-core use of \restrict would be affected, but we've not identified non-core use. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：client。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：不要对 psql 的 \unrestrict 命令参数执行反引号扩展

Buffer over-read in PostgreSQL ascii() SQL function allows a user to disclose up to 3 bytes after the end of a specific allocation, via a crafted text value. This is the same class of defect that CVE-2026-2006 fixed, though this instance has less impact. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.11：增强 ascii() 函数对无效输入的防护

Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of service against the ECPG client via sending a bytea value lacking the mandatory prefix. The client overwrites a huge memory region with bytes outside attacker knowledge or control. This typically yields a simple SIGSEGV, but rare cases might achieve client-specific integrity impact via the write. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：client。

官方受影响分支记录：17。

AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

发布说明中的提及：

• 17.11：修复 ecpg 应用程序因接收服务器返回的无效 bytea 数据而发生的越界写入

Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operating system user running the database, via re-creation of a cursor or other portal with different types. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：交叉检查运行 EXECUTE 或 FETCH 的 portal 的输出行类型

Type confusion in PostgreSQL pg_restore_attribute_stats() allows an object creator to execute arbitrary code as the operating system user running the database, via conflation of range and multirange values. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.

以上保留官方英文漏洞说明。

尚未记录本分支的修复版本。组件：core server。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 pg_restore_attribute_stats() 对多范围类型的处理

Integer wraparound in PostgreSQL fuzzystrmatch allows a user to direct writes to a huge range of addresses, executing arbitrary code as the operating system user running the database, via extreme inputs to SQL function levenshtein() or levenshtein_less_equal(). Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 contrib/fuzzystrmatch 的 levenshtein() 和 levenshtein_less_equal() 函数中的整数溢出

SQL injection in PostgreSQL EXTRACT() deparse allows an object owner to execute arbitrary SQL as a superuser via a hostile object definition. Attacks affect expression deparse consumers broadly, including pg_dump, psql commands like \sf, and any similar usage in non-core tools. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：逆解析 EXTRACT() 函数调用时，按需为字段名加引号

Improper enforcement of message integrity in PostgreSQL GSSAPI support allows a user to negotiate GSSAPI contrary to pg_hba.conf rules, via initial direct TLS connection. Despite a pg_hba.conf that appears to require GSSAPI, the connection may exchange data over TLS encryption alone. If the TLS settings are more permissive than the GSS settings, the connection may continue with lesser protection. Within major versions 17-18, minor versions before PostgreSQL 18.6 and 17.11 are affected. Versions before PostgreSQL 17 are unaffected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.11：在直接 SSL 连接之后拒绝 GSSEncRequest

Type confusion with PostgreSQL "internal" data type arguments allows any user to execute arbitrary code as the operating system user running the database, via calls to functions with that argument type. Type "internal" represents a class of mutually-incompatible data structures not intended for access from SQL. The system intended to prevent such function calls, but this prevention had gaps. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：拒绝从 SQL 调用接受或返回 internal 类型的函数

Stack buffer overflow in PostgreSQL argument name matching allows an object creator to achieve unknown impacts via OUT parameter count. The attack can write only 0x0 and 0x1 bytes. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

发布说明中的提及：

• 17.11：修复多处错误地假定无需处理超过 FUNC_MAX_ARGS 个函数参数的问题

Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer. This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.11：修复 contrib/pg_trgm 的 GiST picksplit 函数中的数据类型错误

Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 PL/Perl 和 PL/Tcl 内存分配计算中的整数溢出

Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.

以上保留官方英文漏洞说明。

尚未记录本分支的修复版本。组件：contrib module。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 contrib/pg_stat_statements 中的缓冲区越界写入

Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privilege to execute arbitrary functions as the owners of expression indexes that depend on the search path, via setting a hostile search path before calling the amcheck function. Within major versions 18, 16, 15, and 14, minor versions before PostgreSQL 18.6, 16.15, 15.19, and 14.24 are affected. PostgreSQL 17 is unaffected.

以上保留官方英文漏洞说明。

尚未记录本分支的修复版本。组件：contrib module。

AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.11：确保 contrib/amcheck 函数在执行索引表达式前限制 search_path

Observable response discrepancy in PostgreSQL SCRAM authentication allows an unauthenticated user to test the existence of a user via observing the SCRAM iteration count. This requires the probed user to have a non-default scram_iterations count, because the authentication challenge for a nonexistent user reports the default scram_iterations. Within major versions 16-18, minor versions before PostgreSQL 18.6, 17.11, and 16.15 are affected. Versions before PostgreSQL 16 are unaffected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.11：让模拟的 SCRAM secret 更可信

Type confusion in PostgreSQL module "refint" allows an object creator to execute arbitrary code as the operating system user running the database. The fix for this emerged as a non-security bug report, and the fix appear in the git repository with subject "refint: Remove plan cache.", without a CVE number. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：移除 contrib/refint 中的计划缓存

Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：增强 PL/Perl 对 “tied” Perl 数组和 hash 的防护

Heap buffer overflow in PostgreSQL to_char(timestamptz) allows the party choosing the timezone to execute arbitrary code as the operating system user running the database, via a long POSIX timezone abbreviation. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复 to_char() 处理过长时区缩写时发生的缓冲区越界写入

Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input. While the calculation loses precision, substantial memory value recovery appears possible. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

发布说明中的提及：

• 17.11：让 scalarineqsel() 检查预期为 tid 类型的常量是否确实属于该类型

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.11：角色发生变更后使依赖角色的缓存计划失效

Heap buffer overflow in PostgreSQL regexp allows the query author to execute arbitrary code as the operating system user running the database, via text that would not pass encoding validation. This shares heritage with CVE-2026-2006, but this case involved unanticipated data growth when round-tripped through pg_wchar. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：修复正则表达式匹配/拆分函数中的缓冲区越界写入

Cleartext storage in PostgreSQL pgcrypto disabled ciphers allows a user to recover cleartext, via direct observation of the faulty ciphertext. The OpenSSL version and OpenSSL configuration determine the disabled ciphers. If the application accepts encrypted data as input, decryption will succeed even with the wrong key. This in turn loses the modest protection from the Modification Detection Code (MDC). Affected functions are pgp_sym_encrypt, pgp_sym_decrypt, pgp_pub_encrypt, pgp_pub_decrypt, pgp_sym_encrypt_bytea, pgp_sym_decrypt_bytea, pgp_pub_encrypt_bytea, and pgp_pub_decrypt_bytea. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：contrib module。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.11：修复 contrib/pgcrypto 的 PGP 加密，使其能够检测不受支持的密码算法

Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. These types are typically sourced from application logic, not taken from the application's user. Hence, application users attacking the database, through the application as a conduit, are unlikely. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.11。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：增强 tsvector 和 tsquery 代码对超长值的防护（包括单个词位以及向量/查询的总长度）

Improper neutralization of newlines in pg_dump in PostgreSQL allows a user of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql meta-commands inside a purpose-crafted object name. The same attacks can achieve SQL injection as a superuser of the restore target server. pg_dumpall, pg_restore, and pg_upgrade are also affected. Versions before PostgreSQL 17.6, 16.10, 15.14, 14.19, and 13.22 are affected. Versions before 11.20 are unaffected. CVE-2012-0868 had fixed this class of problem, but version 11.20 reintroduced it.

以上保留官方英文漏洞说明。

本分支修复于：17.6。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.6：在 pg_dump 输出的注释中，将名称中包含的换行符转换为空格

Untrusted data inclusion in pg_dump in PostgreSQL allows a malicious superuser of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql meta-commands. pg_dumpall is also affected. pg_restore is affected when used to generate a plain-format dump. This is similar to MySQL CVE-2024-21096. Versions before PostgreSQL 17.6, 16.10, 15.14, 14.19, and 13.22 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.6。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.11：不要对 psql 的 \unrestrict 命令参数执行反引号扩展
• 17.6：防止 pg_dump 脚本被用于攻击执行恢复的用户

PostgreSQL optimizer statistics allow a user to read sampled data within a view that the user cannot access. Separately, statistics allow a user to read sampled data that a row security policy intended to hide. PostgreSQL maintains statistics for tables by sampling data available in columns; this data is consulted during the query planning process. Prior to this release, a user could craft a leaky operator that bypassed view access control lists (ACLs) and bypassed row security policies in partitioning or table inheritance hierarchies. Reachable statistics data notably included histograms and most-common-values lists. CVE-2017-7484 and CVE-2019-10130 intended to close this class of vulnerability, but this gap remained. Versions before PostgreSQL 17.6, 16.10, 15.14, 14.19, and 13.22 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.6。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.6：加强规划器估算函数中的安全检查

Buffer over-read in PostgreSQL GB18030 encoding validation allows a database input provider to achieve temporary denial of service on platforms where a 1-byte over-read can elicit process termination. This affects the database server and also libpq. Versions before PostgreSQL 17.5, 16.9, 15.13, 14.18, and 13.21 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.5。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

发布说明中的提及：

• 17.5：避免在检查声称为 GB18030 编码的无效编码字符串时发生单字节缓冲区越界读取

Integer wraparound in multiple PostgreSQL libpq client library functions allows an application input provider or network peer to cause libpq to undersize an allocation and write out-of-bounds by hundreds of megabytes. This results in a segmentation fault for the application using libpq. Versions before PostgreSQL 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.7。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

发布说明中的提及：

• 17.7：避免 libpq 中分配大小计算的整数溢出

Missing authorization in PostgreSQL CREATE STATISTICS command allows a table owner to achieve denial of service against other CREATE STATISTICS users by creating in any schema. A later CREATE STATISTICS for the same name, from a user having the CREATE privilege, would then fail. Versions before PostgreSQL 18.1, 17.7, 16.11, 15.15, 14.20, and 13.23 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.7。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L

发布说明中的提及：

• 17.7：检查 CREATE STATISTICS 中模式的 CREATE 权限

Improper neutralization of quoting syntax in PostgreSQL libpq functions PQescapeLiteral(), PQescapeIdentifier(), PQescapeString(), and PQescapeStringConn() allows a database input provider to achieve SQL injection in certain usage patterns. Specifically, SQL injection requires the application to use the function result to construct input to psql, the PostgreSQL interactive terminal. Similarly, improper neutralization of quoting syntax in PostgreSQL command line utility programs allows a source of command line arguments to achieve SQL injection when client_encoding is BIG5 and server_encoding is one of EUC_TW or MULE_INTERNAL. Versions before PostgreSQL 17.3, 16.7, 15.11, 14.16, and 13.19 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.3。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.4：改进 libpq 引用函数的行为
• 17.3：加强 PQescapeString 及相关函数对无效编码输入字符串的防护

Incorrect control of environment variables in PostgreSQL PL/Perl allows an unprivileged database user to change sensitive process environment variables (e.g. PATH ). That often suffices to enable arbitrary code execution, even if the attacker lacks a database server operating system user. Versions before PostgreSQL 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 are affected. The PostgreSQL project thanks Coby Abrams for reporting this problem.

以上保留官方英文漏洞说明。

本分支修复于：17.1。组件：core server。

官方受影响分支记录：17。

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

发布说明中的提及：

• 17.1：防止受信任的 PL/Perl 代码更改环境变量

Incorrect privilege assignment in PostgreSQL allows a less-privileged application user to view or change different rows from those intended. An attack requires the application to use SET ROLE , SET SESSION AUTHORIZATION , or an equivalent feature. The problem arises when an application query uses parameters from the attacker or conveys query results to the attacker. If that query reacts to current_setting('role') or the current user ID, it may modify or return data as though the session had not used SET ROLE or SET SESSION AUTHORIZATION . The attacker does not control which incorrect user ID applies. Query text from less-privileged sources is not a concern here, because SET ROLE and SET SESSION AUTHORIZATION are not sandboxes for unvetted queries. Versions before PostgreSQL 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 are affected. The PostgreSQL project thanks Tom Lane for reporting this problem.

以上保留官方英文漏洞说明。

本分支修复于：17.1。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.2：恢复 ALTER {ROLE|DATABASE} SET role 的功能
• 17.1：修复 SET SESSION AUTHORIZATION 与 SET ROLE 之间意外的交互

Client use of server error message in PostgreSQL allows a server not trusted under current SSL or GSS settings to furnish arbitrary non-NUL bytes to the libpq application. For example, a man-in-the-middle attacker could send a long error message that a human or screen-scraper user of psql mistakes for valid query results. This is probably not a concern for clients where the user interface unambiguously indicates the boundary between one error message and other text. Versions before PostgreSQL 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 are affected. The PostgreSQL project thanks Jacob Champion for reporting this problem.

以上保留官方英文漏洞说明。

本分支修复于：17.1。组件：client。

官方受影响分支记录：17。

AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

发布说明中的提及：

• 17.1：使 libpq 丢弃在 SSL 或 GSS 协议协商期间收到的错误消息

Incomplete tracking in PostgreSQL of tables with row security allows a reused query to view or change different rows from those intended. CVE-2023-2455 and CVE-2016-2193 fixed most interaction between row security and user ID changes. They missed cases where a subquery, WITH query, security invoker view, or SQL-language function references a table with a row-level security policy. This has the same consequences as the two earlier CVEs. That is to say, it leads to potentially incorrect policies being applied in cases where role-specific policies are used and a given query is planned under one role and then executed under other roles. This scenario can happen under security definer functions or when a common user and query is planned initially and then re-used across multiple SET ROLEs. Applying an incorrect policy may permit a user to complete otherwise-forbidden reads and modifications. This affects only databases that have used CREATE POLICY to define a row security policy. An attacker must tailor an attack to a particular application's pattern of query plan reuse, user ID changes, and role-specific row security policies. Versions before PostgreSQL 17.1, 16.5, 15.9, 14.14, 13.17, and 12.21 are affected.

以上保留官方英文漏洞说明。

本分支修复于：17.1。组件：core server。

官方受影响分支记录：17。

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

发布说明中的提及：

• 17.1：确保当 RLS 应用于非顶级表引用时，缓存的执行计划被标记为依赖于调用角色

尚未记录本分支的修复版本。组件：core server。

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

发布说明中的提及：

• 17.6：加强规划器估算函数中的安全检查

尚未记录本分支的修复版本。

发布说明中的提及：

• 17.6：在 pg_dump 输出的注释中，将名称中包含的换行符转换为空格