CVE-2026-90811
Received Received - Intake

Information Disclosure in CosmicStack Mercury Agent

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: VulDB

Description
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.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-14
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-90811
EUVD
EUVD-2026-77766

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cosmicstack-labs mercury-agent to 1.2.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

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Executive Summary

This vulnerability is in cosmicstack-labs mercury-agent up to version 1.2.0. It involves a weakness in the PermissionManager.checkShellCommand function in the Shell Permission Manifest component. The issue allows information disclosure when a manipulation is executed, specifically through local execution.

Impact Analysis

The vulnerability could lead to unauthorized access to sensitive information if exploited locally. Since the exploit is publicly available, attackers with local access could use it to disclose data. However, the attack is limited to local execution, reducing the risk scope.

Mitigation Strategies

Immediately update cosmicstack-labs mercury-agent to a version beyond 1.2.0 if available. If no update exists, restrict local execution permissions for the mercury-agent component and monitor for suspicious activity.

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