CVE-2026-90811

cosmicstack-labs mercury-agent Shell Permission Manifest permissions.ts PermissionManager.checkShellCommand information disclosure

LOW
3.3
CVSS Score
Published: September 14, 2026 at 06:45 PM UTC
Updated: September 14, 2026 at 09:14 PM UTC
1 product affected across 1 vendorMercury Agent

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Severity
LOW3.3
Exploit prediction
EPSS 0.1%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (6)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/403313
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/403313/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-90811
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/922877

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

3.3LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-200CWE-284

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