Description
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Versions prior to 2.5.3 and 2.2.15 are vulnerable to Command Line Injection attacks on Windows when batch files are executed. In Windows, ``CreateProcess()`` always implicitly spawns ``cmd.exe`` if a batch file (.bat, .cmd, etc.) is being executed even if the application does not specify it via the command line. This makes Deno vulnerable to a command injection attack on Windows. Versions 2.5.3 and 2.2.15 fix the issue.
Affected products
deno: deno; microsoft: windows
References5
- github.com/denoland/deno/security/advisories/GHSA-m2gf-x3f6-8hq3 ExploitVendor Advisory
- github.com/denoland/deno/commit/8a0990ccd37bafd8768176ca64b906b… Patch
- github.com/denoland/deno/pull/30818 Issue TrackingPatch
- github.com/denoland/deno/releases/tag/v2.2.15 Release Notes
- github.com/denoland/deno/releases/tag/v2.5.3 Release Notes
Metrics
- CVSS 3.1
-
8.1
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 2% percentile: 82 · as of 9 November 2026
- CWE
- CWE-77
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.