Use-after-free in PostgreSQL - CVE-2026-116310
Published: November 12, 2026
Vulnerability identifier: #VU166126
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-116310
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose portions of server memory.
The vulnerability exists due to use-after-free in PostgreSQL COPY FROM error reporting when processing a longer input row following an ignored or nullified conversion error. A remote user can supply such input rows to cause error reporting to access freed field storage and disclose portions of server memory.
Affected software
PostgreSQL
How to mitigate CVE-2026-116310
Install security update from vendor's website.
PostgreSQL - addressed in versions 17.12, 18.7