🛡️ CVE-2025-0549 — gitlab

🟡 CVSS 5.0 — Medium ⚠️ Exploit Public CWE-288 OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Authentication Bypass Using an Alternate Path or Channel in GitLab

An issue has been discovered in GitLab CE/EE affecting all versions starting from 17.3 prior to 17.9.8, from 17.10 prior to 17.10.6, and from 17.11 prior to 17.11.2. A security vulnerability allows attackers to bypass Device OAuth flow protections, enabling authorization form submission through minimal user interaction.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability none.

Weakness class

CVE-2025-0549 is classified as CWE-288: Authentication Bypass Using an Alternate Path. A secondary route into the application skips the authentication that the primary route enforces.

Affected software

CVE-2025-0549 is recorded against 1 package.

  • gitlab

Timeline and source

Published on 13 May 2025 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. Record sourced from OSV.

References

gitlab.com (Web)
hackerone.com (Web)
nvd.nist.gov (Web)

CVE-2025-0549 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CWE CWE-288
Public Exploit ⚠️ Yes
Source OSV
Published 2025-05-13
Updated 2026-08-12
Modified 2026-06-17
Fix URL N/A

Affected Packages

Software From version Fixed in
gitlab — —

Similar Threats

Exploit Protection

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