CVE-2026-3160

Unintended Proxy or Intermediary ('Confused Deputy') in GitLab

State: Published
Severity: 5.8 Medium
Published: May 14, 2026
Updated: May 14, 2026
Reserved: Feb 24, 2026

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 13.7 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 view Jira issues outside the configured project scope due to an integration filter functioning only as a display control rather than enforcing access boundaries as specified.

Scores

CVSS	Score	Vector	Source
3.1	5.8 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N	GitLab

Weaknesses

CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')

Affected Products

Product	Versions
GitLabGitLab	13.7 to before 18.9.7Affected 18.10 to before 18.10.6Affected 18.11 to before 18.11.3Affected

References

HackerOne Bug Bounty Report #3566042technical-descriptionexploitpermissions-required
https://gitlab.com/gitlab-org/gitlab/-/work_items/591354
https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released/

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