What’s Vulnerable › Vulnerabilities

CVE-2025-0549: Authentication Bypass Using an Alternate Path or Channel in GitLab

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2025-05-09 · updated 2026-06-17
• Weakness: CWE-288

Description

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.

Affected products

• GitLab: from 17.3.0 before 17.9.8; from 17.10.0 before 17.10.6; from 17.11.0 before 17.11.2 — fixed in 17.10.6, 17.11.2, 17.9.8

How to fix

Upgrade to a fixed version: GitLab 17.10.6, 17.11.2, 17.9.8. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/gitlab/-/issues/513996
• https://hackerone.com/reports/2927555

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