CVE-2026-4524

Authentication Bypass Using an Alternate Path or Channel in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.9.1 before 18.9.7, 18.10 before 18.10.6, and 18.11 before 18.11.3 that could have allowed an authenticated user to access confidential issue content in public projects without proper authorization due to improper authorization checks.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.51% chance of exploitation in the next 30 days, 42nd percentile

Published

2026-05-14

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3597717

Security advisories

• https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released

References

• CVE Record
• NVD entry