CVE-2026-18996: Cosmicstack-Labs Mercury-Agent

Medium severity, CVSS 6.3. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability has been found in cosmicstack-labs mercury-agent up to 1.1.12. This vulnerability affects the function PermissionManager.checkShellCommand of the file src/capabilities/permissions.ts of the component run_command Handler. Such manipulation leads to incorrect privilege assignment. The attack may be performed from remote. The exploit has been disclosed to the 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 2026-08-06. Last modified 2026-08-12.