---
cve: "CVE-2023-5226"
severity: "MEDIUM"
cvss: 4.8
epss: "55%"
vendor: "GitLab"
kev: false
exploited: false
published: "2023-12-01 07:15:12"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T23:25:52+02:00"
---

# CVE-2023-5226

> 4.8 MEDIUM

## Beschreibung

An issue has been discovered in GitLab affecting all versions before 16.4.3, all versions starting from 16.5 before 16.5.3, all versions starting from 16.6 before 16.6.1. Under certain circumstances, a malicious actor bypass prohibited branch checks using a specially crafted branch name to manipulate repository content in the UI.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 7de773390b4ddc765d102467a62e607aa9cfe1aa (Commit)
- 8583797ef98a5141565e83105e55b0b124e60aaa (Commit)

## Referenzen

- <https://gitlab.com/gitlab-org/gitlab/-/issues/426400>
- <https://hackerone.com/reports/2173053>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2023-5226) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_