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Vulnerable Software

Vulnerability Details 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.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.003

EPSS Ranking 18.2%

CVSS Severity

CVSS v3 Score 7.5

References

https://github.com/unclecode/crawl4ai/security/advisories/GHSA-4qqr-vv2q-cmr5

Products affected by CVE-2026-53754

Kidocode » Crawl4ai » Version: 0.1.0

cpe:2.3:a:kidocode:crawl4ai:0.1.0
Kidocode » Crawl4ai » Version: 0.2.0

cpe:2.3:a:kidocode:crawl4ai:0.2.0
Kidocode » Crawl4ai » Version: 0.2.1

cpe:2.3:a:kidocode:crawl4ai:0.2.1
Kidocode » Crawl4ai » Version: 0.2.2

cpe:2.3:a:kidocode:crawl4ai:0.2.2
Kidocode » Crawl4ai » Version: 0.2.4

cpe:2.3:a:kidocode:crawl4ai:0.2.4
Kidocode » Crawl4ai » Version: 0.2.6

cpe:2.3:a:kidocode:crawl4ai:0.2.6
Kidocode » Crawl4ai » Version: 0.2.7

cpe:2.3:a:kidocode:crawl4ai:0.2.7
Kidocode » Crawl4ai » Version: 0.2.71

cpe:2.3:a:kidocode:crawl4ai:0.2.71
Kidocode » Crawl4ai » Version: 0.2.72

cpe:2.3:a:kidocode:crawl4ai:0.2.72
Kidocode » Crawl4ai » Version: 0.2.73

cpe:2.3:a:kidocode:crawl4ai:0.2.73
Kidocode » Crawl4ai » Version: 0.2.74

cpe:2.3:a:kidocode:crawl4ai:0.2.74
Kidocode » Crawl4ai » Version: 0.2.77

cpe:2.3:a:kidocode:crawl4ai:0.2.77
Kidocode » Crawl4ai » Version: 0.3.0

cpe:2.3:a:kidocode:crawl4ai:0.3.0
Kidocode » Crawl4ai » Version: 0.3.3

cpe:2.3:a:kidocode:crawl4ai:0.3.3
Kidocode » Crawl4ai » Version: 0.3.6

cpe:2.3:a:kidocode:crawl4ai:0.3.6
Kidocode » Crawl4ai » Version: 0.3.745

cpe:2.3:a:kidocode:crawl4ai:0.3.745
Kidocode » Crawl4ai » Version: 0.3.746

cpe:2.3:a:kidocode:crawl4ai:0.3.746
Kidocode » Crawl4ai » Version: 0.4.24

cpe:2.3:a:kidocode:crawl4ai:0.4.24
Kidocode » Crawl4ai » Version: 0.4.243

cpe:2.3:a:kidocode:crawl4ai:0.4.243
Kidocode » Crawl4ai » Version: 0.4.247

cpe:2.3:a:kidocode:crawl4ai:0.4.247
Kidocode » Crawl4ai » Version: 0.5.0

cpe:2.3:a:kidocode:crawl4ai:0.5.0
Kidocode » Crawl4ai » Version: 0.6.0

cpe:2.3:a:kidocode:crawl4ai:0.6.0
Kidocode » Crawl4ai » Version: 0.6.3

cpe:2.3:a:kidocode:crawl4ai:0.6.3
Kidocode » Crawl4ai » Version: 0.7.0

cpe:2.3:a:kidocode:crawl4ai:0.7.0
Kidocode » Crawl4ai » Version: 0.7.1

cpe:2.3:a:kidocode:crawl4ai:0.7.1
Kidocode » Crawl4ai » Version: 0.7.2

cpe:2.3:a:kidocode:crawl4ai:0.7.2
Kidocode » Crawl4ai » Version: 0.7.3

cpe:2.3:a:kidocode:crawl4ai:0.7.3
Kidocode » Crawl4ai » Version: 0.7.4

cpe:2.3:a:kidocode:crawl4ai:0.7.4
Kidocode » Crawl4ai » Version: 0.7.5

cpe:2.3:a:kidocode:crawl4ai:0.7.5
Kidocode » Crawl4ai » Version: 0.7.6

cpe:2.3:a:kidocode:crawl4ai:0.7.6
Kidocode » Crawl4ai » Version: 0.7.7

cpe:2.3:a:kidocode:crawl4ai:0.7.7
Kidocode » Crawl4ai » Version: 0.7.8

cpe:2.3:a:kidocode:crawl4ai:0.7.8
Kidocode » Crawl4ai » Version: 0.8.0

cpe:2.3:a:kidocode:crawl4ai:0.8.0
Kidocode » Crawl4ai » Version: 0.8.5

cpe:2.3:a:kidocode:crawl4ai:0.8.5
Kidocode » Crawl4ai » Version: 0.8.6

cpe:2.3:a:kidocode:crawl4ai:0.8.6
Kidocode » Crawl4ai » Version: 0.8.7

cpe:2.3:a:kidocode:crawl4ai:0.8.7

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Vulnerability Details CVE-2026-53754

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