---
cve: "CVE-2025-8405"
severity: "HIGH"
cvss: 7.7
epss: "50%"
vendor: "GitLab"
kev: false
exploited: false
published: "2025-12-11 05:16:38"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-15T09:46:32+02:00"
---

# CVE-2025-8405

> 7.7 HIGH

## Beschreibung

GitLab has remediated a security issue in GitLab CE/EE affecting all versions from 17.1 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an authenticated user to perform unauthorized actions on behalf of other users by injecting malicious HTML into vulnerability code flow displays.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/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 | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 39ae6bd44263cf79c3a87027501ddbd9431b21b5 (Commit)
- 61465ef836fe9b2e9ee409ab65b2599e58e7ad91 (Commit)

## Referenzen

- <https://gitlab.com/gitlab-org/gitlab/-/issues/558214>
- <https://hackerone.com/reports/3270940>
- <https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-8405) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_