---
id: CVE-2026-40030
title: parseusbs < 1.9 Command Injection via Volume Path Argument
summary: >-
  parseusbs before 1.9 contains an OS command injection vulnerability where the
  volume listing path argument (-v flag) is passed unsanitized into an
  os.popen() shell command with ls, allowing arbitrary command injection via
  crafted volume …
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-78
vendor: khyrenz
product: parseusbs
affected:
  - parseusbs < 1.9.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-04-09T18:07:55.498397Z'
published: '2026-04-08'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T10:14:09.487Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-40030'
references:
  - url: 'https://github.com/khyrenz/parseusbs/pull/10'
    label: Pull Request
  - url: >-
      https://github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b
    label: Patch Commit
  - url: 'https://mobasi.ai/sentinel'
    label: Mobasi Sentinel Vulnerability Index
  - url: >-
      https://www.vulncheck.com/advisories/parseusbs-command-injection-via-volume-path-argument
    label: >-
      VulnCheck Advisory: parseusbs < 1.9 Command Injection via Volume Path
      Argument
tags:
  - cve.org
epss: 0.0075
epssPercentile: 0.54741
ingestedAt: '2026-10-27T16:11:59.269Z'
---

## Overview

parseusbs before 1.9 contains an OS command injection vulnerability where the volume listing path argument (-v flag) is passed unsanitized into an os.popen() shell command with ls, allowing arbitrary command injection via crafted volume path arguments containing shell metacharacters. An attacker can provide a crafted volume path via the -v flag that injects arbitrary commands during volume content enumeration.

## Affected

- `parseusbs < 1.9.0`

## Remediation

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