CVE-2026-90811: Cosmicstack-Labs Mercury-Agent

Low severity, CVSS 3.3. EPSS: 0.1% chance of exploitation in the next 30 days.

A weakness has been identified in cosmicstack-labs mercury-agent up to 1.2.0. This affects the function PermissionManager.checkShellCommand of the file mercury-agent/src/capabilities/permissions.ts of the component Shell Permission Manifest. Executing a manipulation can lead to information disclosure. The attack is restricted to local execution. The exploit has been made available to the public and could be used for attacks. 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 2026-09-14.