CVE-2025-11984

MEDIUM 6.8

Authentication Bypass Using an Alternate Path or Channel in GitLab

CVSS Score

6.8

EPSS Score

0.0%

EPSS Percentile

0th

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.1 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 bypass WebAuthn two-factor authentication by manipulating the session state under certain conditions.

CWE	CWE-288
Vendor	gitlab
Product	gitlab
Ecosystems	DevTools
Industries	Technology
Published	Dec 11, 2025
Last Updated	Feb 26, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Affected Versions

GitLab / GitLab

13.1 < 18.4.6 18.5 < 18.5.4 18.6 < 18.6.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

gitlab.com: https://gitlab.com/gitlab-org/gitlab/-/issues/577847 hackerone.com: https://hackerone.com/reports/3322714 about.gitlab.com: https://about.gitlab.com/releases/2025/12/10/patch-release-gitlab-18-6-2-released/

Credits

Thanks [jcarre](https://hackerone.com/jcarre) for reporting this vulnerability through our HackerOne bug bounty program