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

Unknown severity · Source severity not reportedCVE-2026-75871

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

Answer in brief

CVE-2026-75871 records a Unknown severity vulnerability in Server-Side Request Forgery (SSRF) in GitLab AI Gateway. The current sources do not mark it as known exploited. The current feed maps GitLab/GitLab AI Gateway (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 27, 2026Updated Aug 27, 2026Source checked Aug 27, 2026First seen by HOL Aug 27, 2026Material review Aug 27, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps GitLab/GitLab AI Gateway (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
GitLab/GitLab AI Gatewaygeneric	>=18.10 <19.0.12 \|\| >=19.1 <19.1.7 \|\| >=19.2 <19.2.2	19.0.12, 19.1.7, 19.2.2

Recommended response

Check inventory. Check lockfiles and deployed manifests for GitLab/GitLab AI Gateway.
Review the reported fix. Update GitLab/GitLab AI Gateway to 19.0.12 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 27, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 27, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.