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CVE-2026-75871

9.6, critical

GitLab AI Gateway Server-Side Request Forgery Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.6, critical critical CVSS v3.1
EPSS, next 30 days
0.3% higher than 25.3% of scored CVEs
Exploitation
No public evidence
Published
27 Aug 2026a month ago

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.

Details

Vendor
GitLab
Product
GitLab AI Gateway
Weakness
CWE-918 (opens in a new tab)
Status
Analyzed
Updated
1 Sept 2026
Assigner
cve@gitlab.com

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References 2

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other GitLab CVEs

Every GitLab CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-85706 GitLab Community Edition and Enterprise Edition Path Traversal Vulnerability KEV EPSS 93% 10, critical
  • CVE-2023-7028 GitLab Community and Enterprise Editions Improper Access Control Vulnerability KEV EPSS 95% 9.8, critical
  • CVE-2021-39935 GitLab Community and Enterprise Editions Server-Side Request Forgery (SSRF) Vulnerability KEV EPSS 36% 7.5, high
  • CVE-2021-22175 GitLab Server-Side Request Forgery (SSRF) Vulnerability KEV EPSS 53% 9.8, critical
  • CVE-2021-22205 GitLab Community and Enterprise Editions Remote Code Execution Vulnerability KEV EPSS 100% 10, critical
  • CVE-2026-18252 GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1… EPSS 0.4% 8.1, high

Beyond this page

Is CVE-2026-75871 in your network?

This page tells you how dangerous CVE-2026-75871 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.