CVE-2026-90970CWE-1336

CVE-2026-90970

Critical · published October 2, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
60.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00943 · 60.7th percentile
Weakness
CWE-1336 · Improper Neutralization of Special Elements Used in a Template Engine
Published
2026-10-02T19:17Z
References (1)
https://gitlab.com/gitlab-org/gitlab/-/work_items/628842 · [email protected]
EPSS history
Timeline
  • 04 OCT 03:31Z
    EPSS moved — → 1%
    epss
  • 02 OCT 14:34Z
    Improper Neutralization of Special Elements Used in a Template Engine in GitLab AI Gateway
    cvelistv5