Arbitrary Command Execution Vulnerability in GitLab AI Gateway Component
CVE-2026-90970

9.9CRITICAL

Key Information:

Vendor

Gitlab
Status
Gitlab Ai Gateway
Vendor
CVE Published:
2 October 2026

What is CVE-2026-90970?

A vulnerability exists in the GitLab AI Gateway component that allows an authenticated user with Duo Agent Platform access to exploit a flaw in the prompt template sandbox. Under specific circumstances, this vulnerability can be triggered using a specially crafted flow configuration, enabling the execution of arbitrary commands on the AI Gateway. This situation poses a significant risk to the integrity and security of the affected systems, highlighting the importance of applying updates and adhering to security best practices.

Affected Version(s)

GitLab AI Gateway 18.1.6 < 19.2.4

GitLab AI Gateway 19.3 < 19.3.2

GitLab AI Gateway 19.4 < 19.4.1

References

https://gitlab.com/gitlab-org/gitlab/-/work_items/628842

CVSS V3.1

Score:
9.9
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [invisiblemeerkat](https://hackerone.com/invisiblemeerkat) for responsibly disclosing this issue
.