CVE-2026-53754

Crawl4AI is an open-source LLM friendly web crawler & scraper. Prior to 0.8.8, the Docker API server's SSRF protection (validate_webhook_url / validate_url_destination in deploy/docker/utils.py) used an explicit IPv4/IPv6 CIDR blocklist that missed several address families. An attacker could reach internal services and cloud metadata endpoints (e.g. 169.254.169.254) despite the filter by encoding an internal IPv4 address inside an IPv6 transition form, or by using the IPv6 unspecified address. Because the Docker API is unauthenticated by default (jwt_enabled: false), no credentials are required. This vulnerability is fixed in 0.8.8.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/unclecode/crawl4ai/security/advisories/GHSA-4qqr-vv2q-cmr5	Third Party Advisory Mitigation

Configurations

Configuration 1 (hide)

cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-23 19:17

Updated : 2026-06-29 16:53

NVD link : CVE-2026-53754

Mitre link : CVE-2026-53754

CVE.ORG link : CVE-2026-53754

JSON object : View

Products Affected

kidocode

crawl4ai

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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