CVE-2026-49411

Deno is a JavaScript, TypeScript, and WebAssembly runtime. Prior to 2.8.0, the Node.js compatibility TCP path checked the permission against the original hostname string before resolution and then did not re-check after resolution. A caller could therefore pass a numeric alias of an IP address (for example the decimal integer 2130706433 or the hex form 0x7f000001, both of which resolve to 127.0.0.1) and reach the denied destination through node:net.connect or node:http.request's { host, port } options form. This vulnerability is fixed in 2.8.0.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.0 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23	Exploit Mitigation Third Party Advisory
https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23	Exploit Mitigation Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:deno:deno:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-23 18:18

Updated : 2026-06-26 20:17

NVD link : CVE-2026-49411

Mitre link : CVE-2026-49411

CVE.ORG link : CVE-2026-49411

JSON object : View

Products Affected

deno

deno

CWE

CWE-284

Improper Access Control

NVD-CWE-noinfo

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