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CVE-2026-15723

Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') in GitLab

Severity
High 8.2
Published
21 Oct 2026
Last changed
27 Oct 2026
Added to UpHeron
23 Oct 2026
Fixed in
19.3.6, 19.4.3, 19.5.1
Sources
NVD, CVE Program

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…

Affected software

SoftwareAffected versions
GitLabServers and applications · cpe:a:gitlab:gitlab
  • From 10.1 before 19.3.6
  • From 19.4 before 19.4.3
  • From 19.5 before 19.5.1
  • Version 19.5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-15723
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-15723