CVE-2025-11984 | BDVDB-2026-305409 Detail

GitLabGitLab

Description#

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-288 Authentication Bypass Using an Alternate Path or Channel

References#

Exploit#

https://hackerone.com/reports/3322714

History#

Version 12025-12-11Record published in the CVE List.
Version 22026-02-26Most recent update recorded in the CVE List.

Published

Published: 2025-12-11
Last modified: 2026-02-26

Vendor information

Vendor: GitLab
Product: GitLab

All GitLab vulnerabilities

Score

6.8 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 33.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 13.1 and < 18.4.6
Fixed
18.4.6
Vulnerable
>= 18.5 and < 18.5.4
Fixed
18.5.4
Vulnerable
>= 18.6 and < 18.6.2
Fixed
18.6.2

Scoring System

CVSS v4.0

Not available

CVSS v3.1

6.8 Medium

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

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

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).