---
cve: "CVE-2026-18024"
severity: "MEDIUM"
cvss: 4.3
epss: "20%"
vendor: "n/a"
kev: false
exploited: false
published: "2026-08-13 13:17:47"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T15:13:56+02:00"
---

# CVE-2026-18024

> 4.3 MEDIUM

## Beschreibung

Buffer over-read in PostgreSQL ascii() SQL function allows a user to disclose up to 3 bytes after the end of a specific allocation, via a crafted text value.  This is the same class of defect that CVE-2026-2006 fixed, though this instance has less impact.  Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

## CVSS-Vektor

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

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

## Referenzen

- <https://www.postgresql.org/support/security/CVE-2026-18024/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18024) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_