CVE-2026-73414
Shescape: Shell injection via unescaped parentheses on Windows with CMD
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-78 CWE-150 |
| Vendor | ericcornelissen |
| Product | shescape |
| Published | Aug 12, 2026 |
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Affected Versions
ericcornelissen / shescape
< 2.1.14 >= 3.0.0, < 3.0.1
References
github.com: https://github.com/ericcornelissen/shescape/security/advisories/GHSA-w4hw-qcx7-56pr github.com: https://github.com/ericcornelissen/shescape/pull/2649 github.com: https://github.com/ericcornelissen/shescape/pull/2651 github.com: https://github.com/ericcornelissen/shescape/commit/43d70b59d09bbe5c3fd02ef08b3a123e977ed9de github.com: https://github.com/ericcornelissen/shescape/commit/b4b34c394e7f9da2775bb75381066b9a228c425f github.com: https://github.com/ericcornelissen/shescape/releases/tag/v2.1.14 github.com: https://github.com/ericcornelissen/shescape/releases/tag/v3.0.1