CVE-2026-49411
MEDIUM EPSS 1.6%
Published Jun 23, 20261w ago · Modified Jun 23, 20261w ago
6.5 CVSS 3.1
Published Jun 23, 2026 1w ago
Last Modified Jun 23, 2026 1w ago
Description
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Changed
Confidentiality High
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
1.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-284
References 1
- github.com https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.