---
cve: "CVE-2026-56264"
severity: "CRITICAL"
cvss: 9.2
epss: "33%"
vendor: "Crawl4AI"
kev: false
exploited: false
published: "2026-06-30 23:17:29"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T09:30:21+02:00"
---

# CVE-2026-56264

> 9.2 CRITICAL · 🧪 PoC

## Beschreibung

Crawl4AI before 0.8.7 contains an arbitrary JavaScript execution vulnerability in the Docker API server's /execute_js endpoint, which accepts and executes arbitrary user-supplied JavaScript in the server's browser context with --disable-web-security enabled. An attacker can execute arbitrary JavaScript and, combined with the browser's relaxed security settings, perform server-side request forgery against internal services.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 7b280d36b150b544bf0994285b4755dca18c2149 (Commit)

## Referenzen

- <https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg>
- <https://github.com/unclecode/crawl4ai>
- <https://www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56264) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_