CVE•Published 2026-06-23•Modified 2026-06-26•0 articles on news•4 live references•NVD data

CVE-2026-49401Deno · Deno

Vulnerability data via NVD (ingested)

CVSS v3.1

7.3

HIGH

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

EPSS percentile

—

Weaknesses (CWE)

CWE-41Improper Resolution of Path Equivalence CWE-176Improper Handling of Unicode Encoding

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.

Timeline

Published 2026-06-23

Modified 2026-06-26

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common). Live host counts are a Premium feature.

Shodan · vuln tag

vuln:CVE-2026-49401

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Deno Deno"

All exposed Deno Deno instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Deno"

HTTP body or banner mentions "Deno" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-49401