CVE-2026-14666

Medium

Description

Incomplete tracking in PostgreSQL of changes to role membership, role attributes, and database ownership allows a query to continue using cached row-level security policies after those changes require a different policy, via plan reuse. Stale policies continue until some other event invalidates the cache or connection termination ends the session. This permits a user to complete reads and modifications that were recently permitted but now forbidden. An attacker must tailor an attack to a particular application's pattern of privilege removal and role-specific row security policies. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

SeverityMedium
CVSS4.2
Exploit probability—
ProductPostgresql
PublishedAug 13, 2026
First seenAug 13, 2026
Weakness typeCWE-1250CWE-1250

How to fix

Update
  • postgresql postgresql14.24, 15.19, 16.15, 17.11, 18.5 or later

Affected products

ProductAffected versionsFixed in
postgresql postgresql14.0 ≤ v < 14.24, 15.0 ≤ v < 15.19, 16.0 ≤ v < 16.15, 17.0 ≤ v < 17.11, 18.0 ≤ v < 18.514.24, 15.19, 16.15, 17.11, 18.5

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CVE-2026-14666 · Postgresql · Dark Radar