🛡️ CVE-2026-56264 — crawl4ai

🟠 CVSS 8.1 — High ✅ No Known Exploit CWE-94 NVD
8.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-56264 is classified as CWE-94: Code Injection. Input is incorporated into code that the runtime evaluates, so an attacker can have their own code executed.

Affected software

CVE-2026-56264 is recorded against 1 package.

  • crawl4ai (fixed in 0.8.7)

Timeline and source

Published on 30 June 2026 and last revised on 6 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com
www.vulncheck.com

Details

Severity HIGH
CVSS Score 8.1
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-94
Public Exploit ✅ No
Source NVD
Published 2026-06-30
Updated 2026-08-11
Modified 2026-07-06
Fix URL N/A

Affected Packages

Software From version Fixed in
crawl4ai — 0.8.7

Similar Threats

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