by Kastro
Paper/Archive/CVE-2026-90970

CVE-2026-90970

GitLab GitLab AI Gateway — Improper Neutralization of Special Elements Used in a Template Engine in GitLab AI Gateway

EPSS 17%CVSS 9.9
critical.is priorityof 100
49
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 97.1.971 × 2019.4No public exploit+100.0SSVC exploitation: none+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 18.1.6 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.

Affected

ProductAffectedFixed inSource
GitLab AI Gateway18.1.6 – < 19.2.419.2.4CNA
GitLab AI Gateway19.3 – < 19.3.219.3.2CNA
GitLab AI Gateway19.4 – < 19.4.119.4.1CNA

Scores by source

GitLab (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgitlab.com/gitlab-org/gitlab/-/work_items/628842