PT-2026-54027 · Crawl4Ai · Crawl4Ai

Published 2026-06-30 · Updated 2026-06-30 · CVE-2026-56264

Mitre

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-56264

Affected Products

Crawl4Ai

References · 4

• https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-56264 · Security Note
• https://github.com/unclecode/crawl4ai · Note
• https://vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint · Note