CVE-2026-49401

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.7.14, Deno's permission system enforces filesystem and execution restrictions by comparing the requested path against the path supplied to --deny-read, --deny-write, --deny-run, or --deny-ffi. On macOS, that comparison was done at the raw-byte level while the APFS filesystem treats different Unicode spellings of the same name as the same file. That means a program could reach a denied path by spelling it differently than the deny rule. This vulnerability is fixed in 2.7.14.

• CWE-41
• CWE-176

• https://github.com/denoland/deno/security/advisories/GHSA-8xpq-cjcf-3wh9Exploit, Mitigation, Vendor Advisory

Published

Jun 23, 2026

Last Modified

Jun 26, 2026

Status

Analyzed

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