CVE-2026-3035

Authentication Bypass Using an Alternate Path or Channel in GitLab

GitLab has remediated an issue in GitLab EE affecting all versions from 11.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user with project Maintainer permissions could have accessed the terminal of a protected environment they were not authorized to use due to improper authorization checks.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.32% chance of exploitation in the next 30 days, 23rd percentile

Published

2026-08-26

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3529751

Security advisories

• https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released
• https://gitlab.com/gitlab-org/gitlab/-/work_items/591189

References

• CVE Record
• NVD entry