---
cve: "CVE-2026-14666"
severity: "MEDIUM"
cvss: 4.2
epss: "18%"
vendor: "n/a"
kev: false
exploited: false
published: "2026-08-13 13:17:43"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T16:49:01+02:00"
---

# CVE-2026-14666

> 4.2 MEDIUM

## Beschreibung

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.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://www.postgresql.org/support/security/CVE-2026-14666/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-14666) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_