CVE-2025-11984 PUBLISHED

Authentication Bypass Using an Alternate Path or Channel in GitLab

Assigner: GitLab
Reserved: 20.10.2025 Published: 11.12.2025 Updated: 26.02.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS Score: 6.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	High	Confidentiality Impact	High
Privileges Required	Low	Integrity Impact	High
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 13.1 to 18.4.6 (excl.) affected from 18.5 to 18.5.4 (excl.) affected from 18.6 to 18.6.2 (excl.)

Solutions

Upgrade to versions 18.4.6, 18.5.4, 18.6.2 or above.

Credits

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

References

Problem Types

CWE-288: Authentication Bypass Using an Alternate Path or Channel CWE