CVE-2026-116326 PUBLISHED

PostgreSQL plperl tied-object exceptions follow stale sigjmp_buf

Assigner: PostgreSQL
Reserved: 26.10.2026 Published: 12.11.2026 Updated: 12.11.2026

Uncaught exceptions in PostgreSQL plperl allow an object creator to cause use of a stale sigjmp_buf, via a tied Perl object, or a Perl object whose overloaded conversion throws while plperl is handling another error. We have not ruled out arbitrary code execution on some platform. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 8.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	n/a
Product	PostgreSQL
Versions	Default: unaffected affected from 18 to 18.7 (excl.) affected from 17 to 17.12 (excl.) affected from 16 to 16.16 (excl.) affected from 15 to 15.20 (excl.) affected from 0 to 14.25 (excl.)

Affected Configurations

Attacker has permission to "CREATE EXTENSION plperl", or another user previously issued that. Attacker has permission to create objects (temporary objects or non-temporary objects in at least one schema).

Credits

The PostgreSQL project thanks Dwij Mehta, Ngoc Trần, and Anthropic OSS program for reporting this problem.

References

https://www.postgresql.org/support/security/CVE-2026-116326/

Problem Types

Operation on a Resource after Expiration or Release CWE