---
cve: "CVE-2026-3857"
severity: "HIGH"
cvss: 8.1
epss: "17%"
vendor: "GitLab"
kev: false
exploited: false
published: "2026-03-25 17:17:09"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T01:53:10+02:00"
---

# CVE-2026-3857

> 8.1 HIGH

## Beschreibung

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to execute arbitrary GraphQL mutations on behalf of authenticated users due to insufficient CSRF protection.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- bbb3a4b03698954b5a8efb0de7bafc061c303ed6 (Commit)
- d0161a9f097f49a9d33a4d8fe1d5a827ee777d67 (Commit)

## Referenzen

- <https://gitlab.com/gitlab-org/gitlab/-/work_items/592828>
- <https://hackerone.com/reports/3584382>
- <https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-3857) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_