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CVE-2026-22864
8.1 HIGH
- CVSS version: 3.1
- Attack vector (AV): NETWORK
- Attack complexity (AC): HIGH
- Privileges required (PR): NONE
- User interaction (UI): NONE
- Scope (S): UNCHANGED
- Confidentiality impact (C): HIGH
- Integrity impact (I): HIGH
- Availability impact (A): HIGH
by @LeSuisse Activity log
- Created automatic suggestion
- @LeSuisse removed package speech-denoiser
- @LeSuisse removed package openimagedenoise
- @LeSuisse removed package terraform-providers.deno
- @LeSuisse removed package python312Packages.denonavr
- @LeSuisse removed package python313Packages.denonavr
- @LeSuisse removed package haskellPackages.pandoc-sidenote
- @LeSuisse removed package terraform-providers.denoland_deno
- @LeSuisse removed package gnomeExtensions.denon-avr-controler
- @LeSuisse removed package python312Packages.bnunicodenormalizer
- @LeSuisse removed package python313Packages.bnunicodenormalizer
- @LeSuisse removed package vscode-extensions.denoland.vscode-deno
- @LeSuisse removed package home-assistant-component-tests.denonavr
- @LeSuisse dismissed
Deno has an incomplete fix for command-injection prevention on Windows — case-insensitive extension bypass
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.
References
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https://github.com/denoland/deno/security/advisories/GHSA-m3c4-prhw-mrx6 x_refsource_CONFIRM
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https://github.com/denoland/deno/releases/tag/v2.5.6 x_refsource_MISC
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https://github.com/denoland/deno/security/advisories/GHSA-m3c4-prhw-mrx6 x_refsource_CONFIRM
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https://github.com/denoland/deno/releases/tag/v2.5.6 x_refsource_MISC
Affected products
deno
- ==< 2.5.6
Package maintainers
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@ofalvai Olivér Falvai <ofalvai@gmail.com>
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@06kellyjac Jack <hello+nixpkgs@j-k.io>