Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.10, Deno's node:child_process implementation provided an escapeShellArg() helper used when callers passed shell: true to spawn / spawnSync / exec and friends. On Windows, the helper failed to quote arguments that contained cmd.exe metacharacters and did not neutralize % (which cmd.exe expands even inside double-quoted strings). An attacker who controlled any portion of an argument passed to such a call could inject arbitrary additional commands into the spawned cmd.exe invocation. This vulnerability is fixed in 2.7.10.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8 Exploit, Mitigation, Vendor Advisory
- https://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8 Exploit, Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.1 · denoNVD modified 2026-10-25 23:10
Affected (CPE criteria) 1
cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*
References 2
- https://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8 Exploit, Mitigation, Vendor Advisory
- https://github.com/denoland/deno/security/advisories/GHSA-7xh3-mhg9-jcw8 Exploit, Mitigation, Vendor Advisory