High 8.1Published Jun 30, 2026

CVE-2026-56264Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint

Updated under an hour ago (Oct 26, 2026, 2:30 PM ET)

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It affects Crawl4AI and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Crawl4AI

Exploited in the last 30 days

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: 8.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Crawl4AI Crawl4AI crawl4ai:crawl4ai (from the name)	before 0.8.7; 0.8.7 not affected	CNA record
kidocode crawl4ai kidocode:crawl4ai	before 0.8.7	NVD

References

References

https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg	vendor-advisory, mitigation
https://github.com/unclecode/crawl4ai	product
https://www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.