CVE-2026-56266
Crawl4AI before 0.8.7 contains a server-side request forgery vulnerability in the /crawl, /crawl/stream, /md, and /llm endpoints that fetch arbitrary user-supplied URLs without validation. Unauthenticated attackers can bypass the internal-address blocklist using IPv6-mapped IPv4 addresses to reach internal services and cloud metadata endpoints.
- CVSS 4.0
- 9.2
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 - CVSS 3.1
- 8.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N - EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 40% of CVEs (scores of 2026-10-25)
- CWE
- CWE-918
- 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 |