CVE-2026-49401

Published Jun 23, 2026

Last updated 4 months ago

Overview

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.
Source
security-advisories@github.com
NVD status
Analyzed
Products
deno

Risk scores

CVSS 3.1

Type
Primary
Base score
8.4
Impact score
5.8
Exploitability score
2
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Severity
HIGH

Weaknesses

security-advisories@github.com
CWE-41

Social media

Hype score
Not currently trending

Configurations

References

Sources include official advisories and independent security research.