by Kastro
Paper/Archive/CVE-2026-75871

CVE-2026-75871

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

EPSS 0.3%public exploitCVSS 9.6
critical.is priorityof 100
44
CVSS 9.6 (NVD)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 26.9.269 × 205.4Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
GitLab AI Gateway18.10 – < 19.0.1219.0.12CNA
GitLab AI Gateway19.1 – < 19.1.719.1.7CNA
GitLab AI Gateway19.2 – < 19.2.219.2.2CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
GitLab (CNA)8.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refgitlab.com/gitlab-org/gitlab/-/work_items/616990exploithackerone.com/reports/3945100