GitLab warns of critical RCE vulnerability in AI Gateway service
GitLab disclosed a critical remote code execution (RCE) vulnerability in its AI Gateway service, tracked as CVE-2026-90970. This flaw allows authenticated users with Duo Agent Platform access to escape the prompt template sandbox and execute arbitrary commands on vulnerable self-hosted AI Gateway instances. GitLab has released patched versions 19.2.4, 19.3.2, and 19.4.1 to address this issue. Users of GitLab-hosted AI Gateway instances are not affected and do not need to take action. Immediate patching is strongly recommended for all self-hosted AI Gateway deployments.
AI Analysis
Technical Summary
The vulnerability CVE-2026-90970 in GitLab's AI Gateway service arises from improper neutralization of input, enabling an authenticated user with Duo Agent Platform access to escape the prompt template sandbox via a specially crafted flow configuration. This leads to arbitrary command execution on the AI Gateway instance. The issue affects self-hosted AI Gateway deployments. GitLab has remediated the flaw in versions 19.2.4, 19.3.2, and 19.4.1. Cloud-hosted AI Gateway users on GitLab.com and GitLab Dedicated are already protected and require no action. The company conducted targeted outreach to affected customers prior to public disclosure.
Potential Impact
Successful exploitation allows an authenticated user with Duo Agent Platform access to execute arbitrary commands on the AI Gateway host, potentially leading to full system compromise of the self-hosted AI Gateway instance. This could undermine the confidentiality, integrity, and availability of the affected system and any integrated workflows relying on the AI Gateway service.
Mitigation Recommendations
GitLab has released official patches in versions 19.2.4, 19.3.2, and 19.4.1 for the self-hosted AI Gateway service. Users should immediately upgrade to one of these versions to remediate the vulnerability. Customers using GitLab-hosted AI Gateway instances do not need to take any action as these are already protected. Follow GitLab's advisory and update guidance promptly.
GitLab warns of critical RCE vulnerability in AI Gateway service
Description
GitLab disclosed a critical remote code execution (RCE) vulnerability in its AI Gateway service, tracked as CVE-2026-90970. This flaw allows authenticated users with Duo Agent Platform access to escape the prompt template sandbox and execute arbitrary commands on vulnerable self-hosted AI Gateway instances. GitLab has released patched versions 19.2.4, 19.3.2, and 19.4.1 to address this issue. Users of GitLab-hosted AI Gateway instances are not affected and do not need to take action. Immediate patching is strongly recommended for all self-hosted AI Gateway deployments.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-90970 in GitLab's AI Gateway service arises from improper neutralization of input, enabling an authenticated user with Duo Agent Platform access to escape the prompt template sandbox via a specially crafted flow configuration. This leads to arbitrary command execution on the AI Gateway instance. The issue affects self-hosted AI Gateway deployments. GitLab has remediated the flaw in versions 19.2.4, 19.3.2, and 19.4.1. Cloud-hosted AI Gateway users on GitLab.com and GitLab Dedicated are already protected and require no action. The company conducted targeted outreach to affected customers prior to public disclosure.
Potential Impact
Successful exploitation allows an authenticated user with Duo Agent Platform access to execute arbitrary commands on the AI Gateway host, potentially leading to full system compromise of the self-hosted AI Gateway instance. This could undermine the confidentiality, integrity, and availability of the affected system and any integrated workflows relying on the AI Gateway service.
Mitigation Recommendations
GitLab has released official patches in versions 19.2.4, 19.3.2, and 19.4.1 for the self-hosted AI Gateway service. Users should immediately upgrade to one of these versions to remediate the vulnerability. Customers using GitLab-hosted AI Gateway instances do not need to take any action as these are already protected. Follow GitLab's advisory and update guidance promptly.
Technical Details
- Classification
- {"confidence":0.75,"severitySource":"heuristic","classifier":"rss-v2"}
- Article Source
- {"url":"https://www.bleepingcomputer.com/news/security/gitlab-warns-of-critical-rce-vulnerability-in-ai-gateway-service/","fetched":true,"fetchedAt":"2026-10-02T16:31:09.902Z","wordCount":726}
Threat ID: 6abfdc4da43b0b3b89d7bb55
Added to database: 10/02/2026, 16:31:09 UTC
Last enriched: 10/02/2026, 16:31:14 UTC
Last updated: 10/02/2026, 17:17:12 UTC
Views: 15
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