CVE-2026-116335

HIGH 8.8

PostgreSQL commutator or negator result-type confusion executes arbitrary code

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

Type confusion in PostgreSQL operator commutator and negator links allows an object creator to execute arbitrary code as the operating system user running the database, via linking operators having different result types or creating inconsistent reciprocal links. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

CWE	CWE-843
Vendor	n/a
Product	postgresql
Ecosystems	Database
Industries	Technology
Published	Nov 12, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

n/a / PostgreSQL

18 < 18.7 17 < 17.12 16 < 16.16 15 < 15.20 0 < 14.25

References

NVD ↗ CVE.org ↗ EPSS Data ↗

postgresql.org: https://www.postgresql.org/support/security/CVE-2026-116335/

Credits

The PostgreSQL project thanks Stephan Lipp for reporting this problem.