9.9

CVE-2026-90970

Media report

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

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.
Data is provided by the CVE programme from a CVE Numbering Authority (CNA) (unstructured).
VendorGitLab
≫
Product GitLab AI Gateway
Default Statusunaffected
Version 18.1.6
Version < 19.2.4
Status affected
Version 19.3
Version < 19.3.2
Status affected
Version 19.4
Version < 19.4.1
Status affected
No warning was found for this CVE.
EPSS Metrics
Type Source Score Percentile
EPSS FIRST.org 0.94% 0.597
CVSS Metrics
Source Base Score Exploit Score Impact Score Vector string
cve@gitlab.com 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine

The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.

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VulnDex Intel
Media Report
13.10.2026 11:15
A VulnDex account is required to access Vulnerability Intelligence.
VulnDex Intel
Media Report
05.10.2026 17:13
A VulnDex account is required to access Vulnerability Intelligence.
VulnDex Intel
Media Report
02.10.2026 19:50
A VulnDex account is required to access Vulnerability Intelligence.
VulnDex Intel
Media Report
02.10.2026 18:35
https://gitlab.com/gitlab-org/gitlab/-/work_items/628842