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CVE-2026-15723

8.2 · HIGH

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 en…

Published Oct 22, 2026gitlabCWE-90EPSS 0.43%

Overview

CVE-2026-15723 is a high-severity vulnerability affecting gitlab gitlab. It was published on October 22, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from gitlab. Update gitlab to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
gitlabgitlab>= 10.1.0, < 19.3.6Affected

References

Refdocs.gitlab.com/releases/patches/patch-release-gitlab-19-5-1-released/Refgitlab.com/gitlab-org/gitlab/-/work_items/605977Refhackerone.com/reports/3852192

How CyberStrike helps

Frequently asked questions

What is CVE-2026-15723?

CVE-2026-15723 is a high-severity vulnerability affecting gitlab gitlab. It was published on October 22, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-15723?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-15723?

Check the references section for vendor advisories and patches from gitlab. Update gitlab to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-15723?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-15723 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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