---
cve: "CVE-2026-54316"
severity: "MEDIUM"
cvss: 6.0
epss: "40%"
vendor: "anthropics"
kev: false
exploited: false
published: "2026-06-23 18:18:08"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T05:04:36+02:00"
---

# CVE-2026-54316

> 6.0 MEDIUM · 🧪 PoC

## Beschreibung

Claude Code is an agentic coding tool.  From 0.2.54 until 2.1.163, because the hostname huggingface.co was pre-approved as a bare hostname for the WebFetch tool, any path on that domain—including attacker-controlled model repositories—was auto-approved without a permission prompt or being subject to --allowedTools restrictions. An attacker able to inject untrusted content into a Claude Code context could direct it to issue WebFetch requests against attacker-controlled repository files (e.g. /resolve/main/config.json), which HuggingFace counts as downloads server-side, creating a covert out-of-band channel for encoding and exfiltrating data Claude can access such as files, environment variables, or command output. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window. This vulnerability is fixed in 2.1.163.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |

## Patch verfügbar (OSV)

- d1e174252d0af47174bd9fbdec6abb092b49226a (Commit)

## Referenzen

- <https://github.com/anthropics/claude-code/security/advisories/GHSA-fg94-h982-f3mm>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-54316) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_