CVE-2026-75871

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

Published Aug 27, 2026 CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Upgrade to version 19.0.12, 19.1.7, 19.2.2, 19.3.0 or newer

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Gitlab gitlab
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Vendors & Products Gitlab gitlab
Type Values Removed Values Added
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.
Title Server-Side Request Forgery (SSRF) in GitLab AI Gateway
First Time appeared Gitlab
Gitlab ai-gateway
Weaknesses CWE-918
CPEs cpe:2.3:a:gitlab:ai-gateway:*:*:*:*:*:*:*:*
Vendors & Products Gitlab
Gitlab ai-gateway
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitLab
Published
Updated
Aug 27, 2026, 6:58 PM
Reserved
Aug 18, 2026, 12:06 PM
Status
Analyzed
Published
Aug 27, 2026, 5:20 PM
Modified
Sep 1, 2026, 8:32 PM