---
id: CVE-2026-73414
title: Shescape is a simple shell escape library for JavaScript
summary: >-
  Shescape is a simple shell escape library for JavaScript. Prior to 2.1.14 and
  3.0.1, getEscapeFunction in src/internal/win/cmd.js does not escape `(` and
  `)` when applications use the escape or escapeAll APIs on Windows with shell
  set to…
severity: none
cwe:
  - CWE-78
  - CWE-150
published: '2026-08-12'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:02:22.660'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73414'
references:
  - url: >-
      https://github.com/ericcornelissen/shescape/commit/43d70b59d09bbe5c3fd02ef08b3a123e977ed9de
    label: security-advisories@github.com
  - url: >-
      https://github.com/ericcornelissen/shescape/commit/b4b34c394e7f9da2775bb75381066b9a228c425f
    label: security-advisories@github.com
  - url: 'https://github.com/ericcornelissen/shescape/pull/2649'
    label: security-advisories@github.com
  - url: 'https://github.com/ericcornelissen/shescape/pull/2651'
    label: security-advisories@github.com
  - url: 'https://github.com/ericcornelissen/shescape/releases/tag/v2.1.14'
    label: security-advisories@github.com
  - url: 'https://github.com/ericcornelissen/shescape/releases/tag/v3.0.1'
    label: security-advisories@github.com
  - url: >-
      https://github.com/ericcornelissen/shescape/security/advisories/GHSA-w4hw-qcx7-56pr
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00889
epssPercentile: 0.57638
ingestedAt: '2026-08-15T21:29:27.386Z'
---

## Overview

Shescape is a simple shell escape library for JavaScript. Prior to 2.1.14 and 3.0.1, getEscapeFunction in src/internal/win/cmd.js does not escape `(` and `)` when applications use the escape or escapeAll APIs on Windows with shell set to cmd.exe, or with shell set to true when CMD is the default. An attacker-controlled argument can break out of a parenthesized CMD construct and inject shell syntax depending on the original command, resulting in arbitrary command execution. This issue is fixed in versions 2.1.14 and 3.0.1.

## Remediation

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