CVE-2026-90811

Summary

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 Software

Weaknesses

• CWE-200: Information Disclosure
• CWE-284: Improper Access Controls

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://vuldb.com/vuln/403313
• https://vuldb.com/vuln/403313/cti
• https://vuldb.com/cve/CVE-2026-90811
• https://vuldb.com/submit/922877
• https://github.com/cosmicstack-labs/mercury-agent/issues/102
• https://github.com/cosmicstack-labs/mercury-agent/

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