
GitLab Patches Critical AI Gateway Vulnerability Enabling Command Execution
GitLab disclosed a critical vulnerability (CVE-2026-90970) with a CVSS score of 9.9 affecting its AI Gateway service, allowing authenticated users with Duo Agent Platform access to execute arbitrary commands on self-hosted gateway instances. The flaw enables prompt template sandbox escapes through specially crafted flow configurations, potentially compromising gateway infrastructure that holds sensitive JWT signing keys and connects to AI model providers. GitLab has patched the vulnerability in gateway versions 19.2.4, 19.3.2, and 19.4.1, and strongly recommends immediate updates for self-hosted deployments. This incident highlights the growing attack surface of AI-integrated development platforms as organizations increasingly adopt AI-powered workflows and autonomous systems, making secure AI gateway configurations critical for preventing unauthorized access to sensitive AI infrastructure and model interactions.
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