# 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. CVSS 9.9 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-90970
Last updated: 2026-10-02T18:44:11Z

- Published: 2026-10-02 14:34 UTC · Updated: 2026-10-02 18:44 UTC · Assigner: GitLab
- CVSS: 9.9 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS: 17.5%, 97th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1336

## Description

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 vendors and products

- GitLab: GitLab AI Gateway

## Tracked companies

- [GitLab](https://rewindex.com/company/gitlab.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-90970)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-90970)
- [https://gitlab.com/gitlab-org/gitlab/-/work\_items/628842](https://gitlab.com/gitlab-org/gitlab/-/work_items/628842)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-90970 · Markdown: https://rewindex.com/cve/CVE-2026-90970.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-90970 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:21.681Z