CVE-2026-32260: high-severity vulnerability in denoland deno
Command Injection via incomplete shell metacharacter blocklist in node:child_process (bypass of CVE-2026-27190 fix)
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 1.6%
Deno is a JavaScript, TypeScript, and WebAssembly runtime. From 2.7.0 to 2.7.1, A command injection vulnerability exists in Deno's node:child_process polyfill (shell: true mode) that bypasses the fix for CVE-2026-27190. The two-stage argument sanitization in transformDenoShellCommand (ext/node/polyfills/internal/child_process.ts) has a priority bug: when an argument contains a $VAR pattern, it is wrapped in double quotes (L1290) instead of single quotes. Double quotes in POSIX sh do not suppress backtick command substitution, allowing injected commands to execute. An attacker who controls arguments passed to spawnSync or spawn with shell: true can execute arbitrary OS commands, bypassing Deno's permission system. This vulnerability is fixed in 2.7.2.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
denoland · denoRelated CVEs — denoland deno
In the same product, most dangerous first.
CVE-2026-27190HIGHDeno has a Command Injection via Incomplete shell metacharacter blocklist in node:child_processEPSS 2.5%CVE-2024-27933HIGHDeno arbitrary file descriptor close via `op_node_ipc_pipe()` leading to permission prompt bypassEPSS 2.3%CVE-2025-61787HIGHDeno is Vulnerable to Command Injection on Windows During Batch File ExecutionEPSS 2.1%CVE-2026-103473CRITICALDeno 2.7.0 through 2.9.7 Command Injection via node:child_processEPSS 1.5%CVE-2022-24783CRITICALSandbox bypass leading to arbitrary code execution in DenoEPSS 1.1%CVE-2023-28446HIGHDeno is vulnerable to interactive `run` permission prompt spoofing via improper ANSI neutralizationEPSS 1.1%