CVE-2026-5173 PUBLISHED

Exposed Dangerous Method or Function in GitLab

Assigner: GitLab
Reserved: 30.03.2026 Published: 08.04.2026 Updated: 08.04.2026

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9.6 before 18.8.9, 18.9 before 18.9.5, and 18.10 before 18.10.3 that could have allowed an authenticated user to invoke unintended server-side methods through websocket connections due to improper access control.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS Score: 8.5

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

CVSS 3.1

Product Status

Vendor	GitLab
Product	GitLab
Versions	Default: unaffected affected from 16.9.6 to 18.8.9 (excl.) affected from 18.9 to 18.9.5 (excl.) affected from 18.10 to 18.10.3 (excl.)

Solutions

Upgrade to versions 18.8.9, 18.9.5, 18.10.3 or above.

Credits

This vulnerability has been discovered internally by GitLab team member Simon Tomlinson finder

References

Problem Types

CWE-749: Exposed Dangerous Method or Function CWE