CVE 7.3 HIGH

Deno Permission Bypass via Unicode Normalization Mismatch on macOS (APFS)_CVE-2026-49401

7.3 / 10
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Description

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.

Basic Information

ID CVE-2026-49401
Source GitHub_M
Published Jun 23, 2026 at 17:22
Modified Jun 23, 2026 at 17:35

Affected Product

Vendor denoland
Product deno
Version < 2.7.14
Affected Versions denoland deno < 2.7.14

CWE Classification

References

💭 Join the Security Discussion

🔒 Your email address will not be published. Required fields are marked *

⚠️ Please be respectful and constructive in your comments. Security discussions should remain professional.