Vulnerability · Gitlab Gitlab
CVE-2026-16255
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.
CVSS score (v3.1)7.1High
Fixed in 19.3.6
Not on CISA KEV list
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- Published by NVD
- Last updated by NVD
Affected products
| Product | Versions |
|---|---|
| Gitlab Gitlab | from 12.0.0 to before 19.3.6; from 19.4.0 to before 19.4.3; 19.5.0 only |
Sources: NVD and CISA known exploited vulnerabilities catalogue.