CVE-2026-90970 — Improper Neutralization of Special Elements Used in a Template Engine in GitLab AI Gateway

CVE-2026-90970

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

Description (CNA)

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 (CNA)

Vendor / product	Versions
GitLab / GitLab AI Gateway	affected 18.1.6 before 19.2.4; affected 19.3 before 19.3.2; affected 19.4 before 19.4.1

CWE

CWE-1336

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.