SSRF in GitLab Ai Gateway
CVE-2026-75871
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- cve@gitlab.com
- cve@gitlab.com (technical-description, permissions-required, exploit)
Frequently asked questions
- What is CVE-2026-75871?
- CVE-2026-75871 is a high-severity vulnerability in GitLab Ai Gateway, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.2/10. Published 2026-08-27.
- How severe is CVE-2026-75871?
- High severity. CVSS v3 base score is 8.2 out of 10.