CVE-2026-61821— pg_partman 保留策略跨模式移动表授权绕过漏洞
一分钟漏洞结论
影响对象
pgpartman pg_partman
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A r
影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| pgpartman | pg_partman | < 5.5.0 |
affected |
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一、 漏洞 CVE-2026-61821 基础信息
漏洞信息
尽管我们使用了先进的大模型技术，但其输出仍可能包含不准确或过时的信息。神龙努力确保数据的准确性，但请您根据实际情况进行核实和判断。
Vulnerability Title
pg_partman authorization bypass to move child tables between schemas during retention
来源: CVE Program / CVE List V5
Vulnerability Description
pg_partman is a PostgreSQL extension that manages partitioned tables by time or ID. Prior to 5.5.0, drop_partition_id() and drop_partition_time() use part_config.retention_schema as the target for ALTER TABLE SET SCHEMA and accept any nonempty schema name. A role with partman_user access can select a target schema where the role lacks the normal CREATE privilege, and the background worker performs the relocation with pg_partman_bgw.role privileges, which default to PostgreSQL superuser, bypassing the authorization check that a normal ALTER TABLE SET SCHEMA operation would enforce. This permits unauthorized relocation of retained child tables between schemas. This issue is fixed in version 5.5.0.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| pgpartman | pg_partman | < 5.5.0 | - |
|
二、漏洞 CVE-2026-61821 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-61821 其他参考 (2)
同批安全公告 · pgpartman · 2026-09-18 · 共 7 条
| CVE-2026-61781 | 9.9 CRITICAL | pg_partman SQL注入致特权提升漏洞 |
| CVE-2026-61820 | 8.5 HIGH | pg_partman SQL注入提权漏洞 |
| CVE-2026-61817 | 8.5 HIGH | PostgreSQL扩展pg_partman SQL注入权限提升漏洞 |
| CVE-2026-61818 | 8.5 HIGH | pg_partman时间分区撤销编码器SQL注入漏洞 |
| CVE-2026-61819 | 8.5 HIGH | pg_partman SQL注入致权限提升 |
| CVE-2026-61822 | 6.5 MEDIUM | pg_partman 分区维护禁用漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-61821
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