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Vulnerability · Published Aug 27, 2026 · Assigned by GitLab

CVE-2026-75871Server-Side Request Forgery (SSRF) in GitLab AI Gateway

High 8.2

In plain English

A high-severity server-side request forgery in GitLab AI Gateway from GitLab. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.3%top 73.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
GitLab GitLab AI Gateway 18.10 – before 19.0.1219.1 – before 19.1.719.2 – before 19.2.2

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

References