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    CVE-2026-32260

    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.

    Published:Mar 12, 2026
    Last Modified:Mar 23, 2026
    EPS:Mar 12, 2026
    EPSS Score:0.00103
    CVSS Score:8.1

    Affected Products

    Vendor
    Deno
    Product
    Deno

    Exploits

    https://github.com/denoland/deno/security/advisories/GHSA-4c96-w8v2-p28j

    Related CVEs

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    CVE-2026-49401 (CVSS 7.3) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.14, Deno's permission system enforces …
    CVE-2026-49402 (CVSS 8.1) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.10, Deno's node:child_process implemen…
    CVE-2026-49406 (CVSS 5.5) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.12, when Deno was run in BYONM mode (n…
    CVE-2026-49411 (CVSS 6.5) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path …
    CVE-2026-49983 (CVSS 5.2) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, environment access is gated by the …
    CVE-2026-49860 (CVSS 5.2) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, when a WebSocket connection was ope…
    CVE-2026-49859 (CVSS 5.2) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, when fetch() was called, Deno check…
    CVE-2026-49440 (CVSS 7.4) — Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.1, node:crypto.checkPrime(candidate[, …

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High