---
id: CVE-2026-90813
title: A vulnerability was detected in cosmicstack-labs mercury-agent up to 1.1.13
summary: >-
  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 inc…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-179
  - CWE-180
vendor: cosmicstack-labs
product: mercury-agent
affected:
  - mercury-agent 1.1.0
  - mercury-agent 1.1.1
  - mercury-agent 1.1.2
  - mercury-agent 1.1.3
  - mercury-agent 1.1.4
  - mercury-agent 1.1.5
  - mercury-agent 1.1.6
  - mercury-agent 1.1.7
  - mercury-agent 1.1.8
  - mercury-agent 1.1.9
  - mercury-agent 1.1.10
  - mercury-agent 1.1.11
  - mercury-agent 1.1.12
  - mercury-agent 1.1.13
published: '2026-09-14'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:56:48.220'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90813'
references:
  - url: 'https://github.com/cosmicstack-labs/mercury-agent/'
    label: cna@vuldb.com
  - url: 'https://github.com/cosmicstack-labs/mercury-agent/issues/95'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90813'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/922879'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403315'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403315/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T19:33:28.495891Z'
ingestedAt: '2026-09-14T20:14:21.162Z'
epss: 0.00554
epssPercentile: 0.4383
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.