Missing Authorization in PostgreSQL - CVE-2026-116311
Published: November 12, 2026
Vulnerability identifier: #VU166125
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-116311
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to read or modify rows in non-owned tables that restrictive row-level security policies were intended to deny.
The vulnerability exists due to missing authorization in the PostgreSQL core server's DROP OWNED command when processing the removal of a role from restrictive row-level security policies. A remote user can execute DROP OWNED to remove its role from these policies, then issue queries to read or modify otherwise restricted rows.
Affected software
PostgreSQL
How to mitigate CVE-2026-116311
Install security update from vendor's website.
PostgreSQL - addressed in versions 14.25, 15.20, 16.16, 17.12, 18.7