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.
References
| Link | Resource |
|---|---|
| https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/ | Release Notes Vendor Advisory |
| https://gitlab.com/gitlab-org/gitlab/-/work_items/605977 | Permissions Required |
| https://hackerone.com/reports/3852192 | Permissions Required |
Configurations
Configuration 1 (hide)
|
History
27 Oct 2026, 14:09
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/ - Release Notes, Vendor Advisory | |
| References | () https://gitlab.com/gitlab-org/gitlab/-/work_items/605977 - Permissions Required | |
| References | () https://hackerone.com/reports/3852192 - Permissions Required | |
| CPE | cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:enterprise:*:*:* cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* cpe:2.3:a:gitlab:gitlab:19.5.0:*:*:*:community:*:*:* cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:* |
|
| First Time |
Gitlab
Gitlab gitlab |
22 Oct 2026, 01:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-22 01:16
Updated : 2026-10-27 14:09
NVD link : CVE-2026-15723
Mitre link : CVE-2026-15723
CVE.ORG link : CVE-2026-15723
JSON object : View
Products Affected
gitlab
- gitlab
CWE
CWE-90
Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')