What is CVE-2026-56264?

CVE-2026-56264 is a high-severity vulnerability in Crawl4ai, classified under Code Injection. CVSS score: 8.1/10. Published 2026-06-30.

How severe is CVE-2026-56264?

High severity. CVSS v3 base score is 8.1 out of 10.

RCE in Crawl4ai

CVE-2026-56264

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-we…

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Crawl4ai — versions 0, 0.8.7

Weakness classification (CWE)

CWE-94 — Code Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56264?: CVE-2026-56264 is a high-severity vulnerability in Crawl4ai, classified under Code Injection. CVSS score: 8.1/10. Published 2026-06-30.
How severe is CVE-2026-56264?: High severity. CVSS v3 base score is 8.1 out of 10.