CVE-2026-2726

Incorrect Authorization in GitLab

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an authenticated user to perform unauthorized actions on merge requests in other projects due to improper access control during cross-repository operations.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.33% chance of exploitation in the next 30 days, 24th percentile

Published

2026-03-25

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3543886

Security advisories

• https://about.gitlab.com/releases/2026/03/25/patch-release-gitlab-18-10-1-released

References

• CVE Record
• NVD entry