CVE-2026-15723 HIGH

CVE-2026-15723: Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection') in GitLab

Vendor Gitlab
Product GitLab
Weakness CWE-90 · LDAP injection
Published October 21, 2026
Last update October 23, 2026
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 21, 2026 CVE published
October 23, 2026 Record updated