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CVE-2026-73414

CVE-2026-73414 · Shescape: Shell injection via unescaped parentheses on Windows with CMD

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 9.2 · Critical · EPSS 0.9% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • shescape

    Versions
    • < 2.1.14: Affected
    • >= 3.0.0, < 3.0.1: Affected

    No fix published

  • shescape npm

    Affected ranges
    • SEMVER: < 2.1.14

    Update to 2.1.14

  • shescape npm

    Affected ranges
    • SEMVER: ≥ 3.0.0, < 3.0.1

    Update to 3.0.1

Original sources

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