What’s Vulnerable › Vulnerabilities

CVE-2026-90813: cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-14
• Weakness: CWE-179

Description

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: 1.1.0, 1.1.1, 1.1.2, 1.1.3, 1.1.4, 1.1.5 (+8)

References

• https://github.com/cosmicstack-labs/mercury-agent/
• https://github.com/cosmicstack-labs/mercury-agent/issues/95
• https://vuldb.com/cve/CVE-2026-90813
• https://vuldb.com/submit/922879
• https://vuldb.com/vuln/403315
• https://vuldb.com/vuln/403315/cti

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