GitLab up to 19.0.11/19.1.6/19.2.1 AI Gateway redirect

Summaryinfo

A vulnerability was found in GitLab up to 19.0.11/19.1.6/19.2.1 and classified as problematic. This issue affects some unknown processing of the component AI Gateway. The manipulation results in redirect. This vulnerability is identified as CVE-2026-75871. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in GitLab up to 19.0.11/19.1.6/19.2.1. Affected is an unknown code of the component AI Gateway. The manipulation with an unknown input leads to a redirect vulnerability. CWE is classifying the issue as CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. This is going to have an impact on integrity. CVE summarizes:

GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.10 to 19.0.12, 19.1 to 19.1.7, and 19.2 to 19.2.2 that could have allowed an authenticated user with Duo Agent Platform access to redirect outbound model requests to an externally-controlled endpoint via a crafted inline flow configuration that overrides the HTTP Host header, resulting in disclosure of Google Cloud Vertex cloud service credentials and private signing keys.

The advisory is available at gitlab.com. This vulnerability is traded as CVE-2026-75871 since 08/18/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project.

Upgrading to version 19.0.12, 19.1.7 or 19.2.2 eliminates this vulnerability.

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Productinfo

Type

• Bug Tracking Software

Name

• GitLab

Version

• 19.0.0
• 19.0.1
• 19.0.2
• 19.0.3
• 19.0.4
• 19.0.5
• 19.0.6
• 19.0.7
• 19.0.8
• 19.0.9
• 19.0.10
• 19.0.11
• 19.1.0
• 19.1.1
• 19.1.2
• 19.1.3
• 19.1.4
• 19.1.5
• 19.1.6
• 19.2.0
• 19.2.1

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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