CVE-2026-116306

HIGH
MEDIUM Priority: 0.05 BB Relevance: 68/100
Published: 2026-11-12 Modified: 2026-11-13 First seen: 2026-11-12 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

Type confusion in PostgreSQL composite-value field assignment allows an object creator to execute arbitrary code as the operating system user running the database, via changing a composite type between deforming and reforming a value. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

Affected Software (15)

VendorProductVersion
n/a PostgreSQL 18 < 18.7
n/a PostgreSQL 17 < 17.12
n/a PostgreSQL 16 < 16.16
n/a PostgreSQL 15 < 15.20
n/a PostgreSQL 0 < 14.25
n/a PostgreSQL 18 < 18.7
n/a PostgreSQL 17 < 17.12
n/a PostgreSQL 16 < 16.16
n/a PostgreSQL 15 < 15.20
n/a PostgreSQL 0 < 14.25
n/a PostgreSQL 18 < 18.7
n/a PostgreSQL 17 < 17.12
n/a PostgreSQL 16 < 16.16
n/a PostgreSQL 15 < 15.20
n/a PostgreSQL 0 < 14.25

Bug Bounty Relevance

68 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

8.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

0.59%
Raw Score 0.005900
Percentile 48.8%
Date 2026-11-13

Intelligence Sources

mitre ref →
nvd ref →