Expired pointer dereference in PostgreSQL - CVE-2026-116326
Published: November 12, 2026
Vulnerability identifier: #VU166111
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-116326
CWE-ID: CWE-825
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service and potentially execute arbitrary code.
The vulnerability exists due to use of an expired exception-handling context in PostgreSQL plperl when processing uncaught Perl object exceptions. A remote user can create a tied Perl object, or an object whose overloaded conversion throws while plperl is handling another error, to trigger use of a stale sigjmp_buf, potentially causing a crash or arbitrary code execution on some platforms.
Affected software
PostgreSQL
How to mitigate CVE-2026-116326
Install security update from vendor's website.
PostgreSQL - addressed in versions 14.25, 15.20, 16.16, 17.12, 18.7