CVE-2026-90970
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BaseFortify

Publication date: 2026-10-02

Last updated on: 2026-10-02

Assigner: GitLab Inc.

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.

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Meta Information

Published
2026-10-02
Last Modified
2026-10-02
Generated
2026-10-19
AI Q&A
2026-10-02
EPSS Evaluated
2026-10-18
NVD
CVE-2026-90970
EUVD
EUVD-2026-91651

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
GitLab GitLab AI Gateway 18.1.6
GitLab GitLab AI Gateway 19.3
GitLab GitLab AI Gateway 19.4

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-1336 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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Executive Summary

This vulnerability in GitLab's AI Gateway allows an authenticated user with Duo Agent Platform access to bypass prompt template sandboxing through a specially crafted flow configuration. This could lead to arbitrary command execution on the AI Gateway.

Detection Guidance

This vulnerability requires checking GitLab AI Gateway versions and Duo Agent Platform access logs. Verify if your AI Gateway version is below 19.2.4, 19.3.2, or 19.4.1. Inspect flow configurations for unauthorized command execution attempts in logs.

Impact Analysis

An attacker could exploit this to execute arbitrary commands on the AI Gateway, potentially leading to unauthorized access, data breaches, or disruption of AI-related services.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations due to potential exposure of sensitive data.

Mitigation Strategies

Upgrade GitLab AI Gateway to a patched version: 19.2.4, 19.3.2, or 19.4.1 or later. Remove Duo Agent Platform access for users until the upgrade is complete.

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