---
cve: "CVE-2026-49411"
severity: "MEDIUM"
cvss: 6.5
epss: "14%"
vendor: "denoland"
kev: false
exploited: false
published: "2026-06-23 18:18:03"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-14T04:23:40+02:00"
---

# CVE-2026-49411

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

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-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Lokal | good |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- fbb5be31ac23ef40f51025d6aeaaa91d9f082e4a (Commit)

## Referenzen

- <https://github.com/denoland/deno/security/advisories/GHSA-v8fw-85r8-5m23>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-49411) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_