CVE-2026-1230

MEDIUM severity · CVSS 4.1 · CWE-706

4.1CVSS MEDIUM

Summary

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 1.0 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 cause repository downloads to contain different code than displayed in the web interface due to incorrect validation of branch references under certain circumstances.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredLow

User interactionRequired

Confidentiality impactNone

Integrity impactLow

Availability impactNone

Exploit probability (EPSS)0%

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

Affected products we track (1)

GitLab

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

NVD record
https://about.gitlab.com/releases/2026/03/11/patch-release-gitlab-18-9-2-released/Advisory
https://gitlab.com/gitlab-org/gitlab/-/work_items/587002
https://hackerone.com/reports/3505165