CVE-2026-0602

Authentication Bypass Using an Alternate Path or Channel in GitLab

State: Published
Severity: 4.3 Medium
Published: Mar 11, 2026
Updated: Mar 11, 2026
Reserved: Jan 5, 2026

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.6 before 18.7.6, 18.8 before 18.8.6, and 18.9 before 18.9.2 that could have allowed an authenticated user to disclose metadata from private issues, merge requests, epics, milestones, or commits due to improper filtering in the snippet rendering process under certain circumstances.

Scores

CVSS	Score	Vector	Source
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N	GitLab

Weaknesses

CWE-288 Authentication Bypass Using an Alternate Path or Channel

Affected Products

Product	Versions
GitLabGitLab	15.6 to before 18.7.6Affected 18.8 to before 18.8.6Affected 18.9 to before 18.9.2Affected

References

HackerOne Bug Bounty Report #3486504technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/585007
https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/

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