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CVE

CVE-2026-56264

Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint
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CVE

CVE-2026-56264

Crawl4AI - Arbitrary JavaScript Execution via /execute_js Endpoint

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.2
-
4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56264.json, https://github.com/unclecode/crawl4ai/security/advisories/GHSA-365w-hqf6-vxfg, https://nvd.nist.gov/vuln/detail/CVE-2026-56264, https://www.vulncheck.com/advisories/crawl4ai-arbitrary-javascript-execution-via-execute-js-endpoint, https://github.com/unclecode/crawl4ai

Severity

8.6

CVSS Score
0
10

Basic Information

Base CVSS
8.6
EPSS Probability
0.00476%
EPSS Percentile
0.39411%
Introduced Version
0
Fix Available
7b280d36b150b544bf0994285b4755dca18c2149

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