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CVE-2026-16255

5.9 medium Awaiting Analysis
NVD · CVE.org

GitLab has remediated an issue in GitLab EE affecting all versions from 12.0 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when the instance-wide SAML or LDAP membership lock was enabled, an authenticated user could have granted or accepted project and group membership outside the identity provider's control, due to incomplete enforcement of the membership lock on requests created before the lock was enabled.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusReceived → Awaiting AnalysisNVD modified 2026-10-22 16:18
  2. Cpes-1 CPE criteria (now 0)NVD modified 2026-10-22 01:16
  3. StatusPublished → ReceivedNVD modified 2026-10-22 01:16
  4. First seenCVSS 5.9 · gitlabNVD modified 2026-10-21 23:35

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3