# CVE-2026-116335: PostgreSQL commutator or negator result-type confusion executes arbitrary code

Status: published. Published: 2026-11-12. Updated: 2026-11-13.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- n/a / PostgreSQL: ≥ 18; < 18.7 (affected, rpm); ≥ 17; < 17.12 (affected, rpm); ≥ 16; < 16.16 (affected, rpm); ≥ 15; < 15.20 (affected, rpm); ≥ 0; < 14.25 (affected, rpm). Source: CNA: PostgreSQL

## Severity and prioritization

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H; source: CNA: PostgreSQL

- CVSS 3.1: 8.8 (high); CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H; source: NVD: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-843

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.postgresql.org/support/security/CVE-2026-116335/ (CNA: PostgreSQL)

- https://www.postgresql.org/support/security/CVE-2026-116335/ (f86ef6dc-4d3a-42ad-8f28-e6d5547a5007)

## Provenance

- CNA: PostgreSQL: https://www.cve.org/CVERecord?id=CVE-2026-116335; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-116335; retrieved 2026-11-13; source updated 2026-11-13

Revision: f675f14c88b898341036fa5f41212b5ac945fef335776dc7e66dfe7b7ab5f126

Canonical: https://y2.dev/cve/CVE-2026-116335

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