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CVE-2026-75871 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.6 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CNA: [email protected]CVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://gitlab.com/gitlab-org/gitlab/-/work_items/616990	[email protected]	Broken Link
https://hackerone.com/reports/3945100	[email protected]	Broken Link

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-918	Server-Side Request Forgery (SSRF)	[email protected]

Affected Products

Product	Versions
gitlab gitlab	>= 18.10.0, < 19.0.12 >= 19.1.0, < 19.1.7 >= 19.2.0, < 19.2.2
CPE cpe:2.3:a:gitlab:gitlab:::::::: Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Sep 1, 2026	Initial Analysis	[email protected]
Aug 27, 2026	CVE Modified	CISA-ADP
Aug 27, 2026	New CVE Received	[email protected]