CVE-2026-90813: Cosmicstack-Labs Mercury-Agent

Medium severity, CVSS 4.3. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability was detected in cosmicstack-labs mercury-agent up to 1.1.13. Affected is the function checkShellCommand of the file src/capabilities/permissions.ts of the component Shell Command Execution. The manipulation results in incorrect behavior order: validate before canonicalize. The attack may be launched remotely. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Affected products

• Cosmicstack-Labs Mercury-Agent: version 1.1.0 only; version 1.1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; version 1.1.5 only; …

Published 2026-09-14. Last modified 2026-09-14.