CVE-2026-73414CWE-150CWE-78command-injection

CVE-2026-73414

published August 13, 2026

CVSS
9.2
EPSS
1%
Percentile
58.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
9.2 · NONE
CVSS v4.0
Not supplied
EPSS
0.00889 · 58.9th percentile
Weaknesses
CWE-150 · Improper Neutralization of Escape, Meta, or Control Sequences; CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-08-13T00:17Z
References (7)
https://github.com/ericcornelissen/shescape/commit/43d70b59d09bbe5c3fd02ef08b3a123e977ed9de · [email protected]https://github.com/ericcornelissen/shescape/commit/b4b34c394e7f9da2775bb75381066b9a228c425f · [email protected]https://github.com/ericcornelissen/shescape/pull/2649 · [email protected]https://github.com/ericcornelissen/shescape/pull/2651 · [email protected]https://github.com/ericcornelissen/shescape/releases/tag/v2.1.14 · [email protected]https://github.com/ericcornelissen/shescape/releases/tag/v3.0.1 · [email protected]https://github.com/ericcornelissen/shescape/security/advisories/GHSA-w4hw-qcx7-56pr · [email protected]
EPSS history
Timeline
  • 12 AUG 19:42Z
    Shescape: Shell injection via unescaped parentheses on Windows with CMD
    cvelistv5