CVE-2026-90812: Cosmicstack-Labs Mercury-Agent

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A security vulnerability has been detected in cosmicstack-labs mercury-agent up to 1.2.0. This impacts the function checkShellCommand of the file src/capabilities/permissions.ts of the component Shell Command Permission. The manipulation leads to incorrect privilege assignment. The attack may be initiated remotely. The exploit has been disclosed publicly 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 1.0 only; version 1.1 only; version 1.2.0 only

Published 2026-09-14. Last modified 2026-09-16.