SECURELYN

CVE-2026-90970

GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.1.6 before 19.2.4, 19.3 before 19.3.2, and 19.4 before 19.4.1 that, under certain conditions, could have allowed an authenticated user with Duo Agent Platform access to escape the prompt template sandbox via a specially crafted flow configuration, resulting in arbitrary command execution on the AI Gateway.

Scores

9.9
CVSS 9.9 out of 10, critical severity.
0.9%
EPSS 0.9% chance of exploitation in the next 30 days.

The facts

Published
2 October 2026
Last changed
2 October 2026
NVD status
Awaiting Analysis
Severity
Critical, CVSS 9.9 out of 10 (version 3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness
Known exploited
Not in the CISA Known Exploited Vulnerabilities catalogue in this build.
EPSS
0.9% chance of exploitation activity in the next 30 days (percentile 60).

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References