CVE-2026-90813

cosmicstack-labs mercury-agent Shell Command Execution permissions.ts checkShellCommand validate before canonicalize

MEDIUM
4.3
CVSS Score
Published: September 14, 2026 at 07:15 PM UTC
Updated: September 14, 2026 at 09:14 PM UTC
1 product affected across 1 vendorMercury Agent

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.6%
SSVC
PoC

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

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/403315
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/403315/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-90813
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/922879

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

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

CVSS

4.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-180CWE-179

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