CVE-2026-22864

HIGH

8.1

Description

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Before 2.5.6, a prior patch aimed to block spawning Windows batch/shell files by returning an error when a spawned path’s extension matched .bat or .cmd. That check performs a case-sensitive comparison against lowercase literals and therefore can be bypassed when the extension uses alternate casing (for example .BAT, .Bat, etc.). This vulnerability is fixed in 2.5.6.

Details CVE

Score CVSS v3.18.1

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurNONE

Publie1/15/2026

Derniere modification1/21/2026

Sourcenvd

Observations honeypot0

Produits affectes

deno:deno

Faiblesses (CWE)

CWE-77

References

https://github.com/denoland/deno/releases/tag/v2.5.6(security-advisories@github.com)

https://github.com/denoland/deno/security/advisories/GHSA-m3c4-prhw-mrx6(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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