GitLab: Mehrere Schwachstellen
WID-SEC-2026-1523 · first 15.05.2026 · updated 15.05.2026 · CVSS 8,7
What it is about
GitLab ist eine Webanwendung zur Versionsverwaltung für Softwareprojekte auf Basis von git. Ein Angreifer kann mehrere Schwachstellen in GitLab ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Cross-Site Scripting Angriff durchzuführen
- einen Denial of Service Angriff durchzuführen
- Informationen offenzulegen
- Dateien zu manipulieren
- Sicherheitsvorkehrungen zu umgehen
Am I affected?
Affected according to the BSI:
- Open Source GitLab <18.11.13
- Open Source GitLab <18.10.6
- Open Source GitLab <18.9.7
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source GitLab 18.11.13
- Open Source GitLab 18.10.6
- Open Source GitLab 18.9.7
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- GitLab Patch Release vom 2026-05-13 docs.gitlab.com
CVE: CVE-2025-12669, CVE-2025-13874, CVE-2025-14869, CVE-2025-14870, CVE-2026-1184, CVE-2026-1322, CVE-2026-1338, CVE-2026-1659, CVE-2026-2900, CVE-2026-3073, CVE-2026-3074, CVE-2026-3160, CVE-2026-3607, CVE-2026-4524, CVE-2026-4527, CVE-2026-5297, CVE-2026-6063, CVE-2026-6073, CVE-2026-6335, CVE-2026-6883 …
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.