Cloudanix VulnDB

CVE-2026-49402

High · 8.1

CVSS

8.1

EPSS

0.4%

Published

Jun 23, 2026

CISA due date

—

The record

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.

Affected packages

Ecosystem Package Introduced Fixed
crates.io deno 0 2.7.10

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