CVE-2026-2104

Authorization Bypass Through User-Controlled Key in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.2 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 access confidential issues assigned to other users via CSV export due to insufficient authorization checks.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.31% chance of exploitation in the next 30 days, 22nd percentile

Published

2026-04-08

Updated

2026-04-09

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3541476

Security advisories

• https://about.gitlab.com/releases/2026/04/08/patch-release-gitlab-18-10-3-released

References

• CVE Record
• NVD entry