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CVE-2026-4398

Authorization Bypass Through User-Controlled Key in GitLab

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 19.1.7, 19.2.5, 19.3.1
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

GitLab has remediated an issue in GitLab EE affecting all versions from 18.3 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions, an authenticated user could have assigned compliance frameworks from namespaces they were not authorized to access to their own project, due to missing namespace validation on self-managed instances.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • GitLab GitLab

    From 18.3 · fixed in 19.1.7; From 19.2 · fixed in 19.2.5; From 19.3 · fixed in 19.3.1

References 3

hackerone.com

gitlab.com

docs.gitlab.com