# CVE-2026-14666

## Summary

- **CVE ID:** CVE-2026-14666
- **Severity:** MEDIUM
- **CVSS Score:** 4.2 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N)
- **CWE:** CWE-1250
- **Published:** Aug 13, 2026
- **Last Modified:** Aug 29, 2026

## 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 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

## Affected Products

- n/a — PostgreSQL (18)
- n/a — PostgreSQL (17)
- n/a — PostgreSQL (16)
- n/a — PostgreSQL (15)
- n/a — PostgreSQL (0)

## References

- [CNA](https://www.postgresql.org/support/security/CVE-2026-14666/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.18%
- **EPSS Percentile:** 7.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._