CVE-2026-90810
Received Received - Intake

Improper Authorization in CosmicStack Mercury Agent

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: VulDB

Description
A security flaw has been discovered in cosmicstack-labs mercury-agent up to 1.1.13. The impacted element is the function PermissionManager.checkShellCommand of the file mercury-agent/src/capabilities/permissions.ts of the component Shell Command Permission Check. Performing a manipulation results in improper authorization. The attack can be initiated remotely. The exploit has been released to the public and may 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-2026-90810
EUVD
EUVD-2026-77763

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cosmicstack-labs mercury-agent to 1.1.13 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-285 The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.
CWE-266 A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.

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Executive Summary

This vulnerability is an improper authorization flaw in cosmicstack-labs mercury-agent up to version 1.1.13. It exists in the PermissionManager.checkShellCommand function within the mercury-agent/src/capabilities/permissions.ts file, specifically in the Shell Command Permission Check component. The issue allows unauthorized remote manipulation of shell commands due to insufficient permission validation.

Impact Analysis

An attacker could exploit this flaw to execute unauthorized shell commands remotely, potentially gaining control over the affected system. Since the exploit is publicly available, the risk of attacks is elevated. The vulnerability requires some level of user interaction or existing permissions to be exploited.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating compliance requirements under GDPR and HIPAA. GDPR mandates strict access controls and breach notifications, while HIPAA requires safeguards for protected health information. Exploitation may result in non-compliance penalties and legal consequences.

Mitigation Strategies

Immediately update cosmicstack-labs mercury-agent to a version beyond 1.1.13. If no update is available, disable or restrict access to the Shell Command Permission Check functionality in mercury-agent/src/capabilities/permissions.ts. Monitor network traffic for unauthorized shell command execution attempts.

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