CVE-2026-16255

Published Oct 22, 2026

Last updated a day ago

Overview

Description
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.
Source
cve@gitlab.com
NVD status
Analyzed
Products
gitlab

Risk scores

CVSS 3.1

Type
Primary
Base score
7.1
Impact score
4.2
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Severity
HIGH

Weaknesses

cve@gitlab.com
CWE-863

Social media

Hype score
Not currently trending

Configurations