CVSS 4.0
9.2 criticalCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NCVE-2026-56264
Critical (9.2) in kidocode crawl4ai. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in crawl4ai 0.8.7.
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.
Severity
CVSS 3.1
6.1 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-31)
- CWE
- CWE-94
- Published
- Modified
- Record from
- the NVD, synced
Affected
- kidocode:crawl4ai
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-365w-hqf6-vxfg | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| GHSA-8qrg-7j2f-rf2h | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-229 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-230 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-239 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-3443 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-3449 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-596 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |
| PYSEC-2026-798 | PyPI | crawl4ai | <0.8.7 | 0.8.7 |