CVE-2026-3160

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

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.

Affected

GitLab

CVSS v3.1 GITLAB

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

EPSS

0.38% chance of exploitation in the next 30 days, 31st percentile

Published

2026-05-14

Proof-of-concept exploits (1)

• https://hackerone.com/reports/3566042

Security advisories

• https://about.gitlab.com/releases/2026/05/13/patch-release-gitlab-18-11-3-released

References

• CVE Record
• NVD entry