Critical severity · published Aug 27, 2026
CVE-2026-75871
Server-Side Request Forgery (SSRF) in GitLab AI Gateway
9.6
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
18.10.0 before 19.0.12; 19.1.0 before 19.1.7; 19.2.0 before 19.2.2 · source: NVD
GA
GitLab AI Gateway · GitLab
18.10 before 19.0.12; 19.1 before 19.1.7; 19.2 before 19.2.2 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-75871
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-75871
Broken Link
https://gitlab.com/gitlab-org/gitlab/-/work_items/616990
Broken Link
https://hackerone.com/reports/3945100
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