CVE-2026-75871: CWE-918: Server-Side Request Forgery (SSRF) in GitLab GitLab AI Gateway
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.
CVE-2026-75871: CWE-918: Server-Side Request Forgery (SSRF) in GitLab GitLab AI Gateway
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.
CVSS v3.1
Score 8.2high
Affected software
cpe:2.3:a:gitlab:ai-gateway:*:*:*:*:*:*:*:*Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-08-18T12:06:50.452Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
- Is Cloud Service
- true
Threat ID: 6a906badacd9273b49839ad0
Added to database: 08/27/2026, 16:54:05 UTC
Last updated: 08/28/2026, 02:03:38 UTC
Views: 9
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