Critical severityNVD Advisory· Published Aug 12, 2026· Updated Sep 9, 2026
CVE-2026-73414
CVE-2026-73414
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
shescapenpm | < 2.1.14 | 2.1.14 |
shescapenpm | >= 3.0.0, < 3.0.1 | 3.0.1 |
Affected products
1Patches
Vulnerability mechanics
References
9- github.com/advisories/GHSA-w4hw-qcx7-56prghsaADVISORY
- github.com/ericcornelissen/shescape/blob/dea8893a5877893d8d4923dbf253080e08899e6d/docs/migration.mdghsaWEB
- github.com/ericcornelissen/shescape/commit/43d70b59d09bbe5c3fd02ef08b3a123e977ed9denvdWEB
- github.com/ericcornelissen/shescape/commit/b4b34c394e7f9da2775bb75381066b9a228c425fnvdWEB
- github.com/ericcornelissen/shescape/pull/2649nvdWEB
- github.com/ericcornelissen/shescape/pull/2651nvdWEB
- github.com/ericcornelissen/shescape/releases/tag/v2.1.14nvdWEB
- github.com/ericcornelissen/shescape/releases/tag/v3.0.1nvdWEB
- github.com/ericcornelissen/shescape/security/advisories/GHSA-w4hw-qcx7-56prnvdWEB
News mentions
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