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8.2 High

CVE-2026-15723 GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1 before 19.3.6, 19.4 before 19.4.3, and…

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 10.1 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when OmniAuth SAML and LDAP auto-linking were both enabled, an authenticated user could have taken over an existing LDAP-backed account without any interaction from the targeted user, due to improper input sanitization in the LDAP email lookup path used during OmniAuth identity linking.

Affected products and versions

Product Affected versions Fixed in
GitLab 19.5 19.5 → < 19.5.1 19.5.1
GitLab 19.4 19.4 → < 19.4.3 19.4.3
GitLab 10.1 10.1 → < 19.3.6 19.3.6

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