CVE-2026-56266

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Source
https://cve.org/CVERecord?id=CVE-2026-56266
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56266.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56266
Aliases
Published
2026-06-22T21:04:44.755Z
Modified
2026-07-09T16:56:25.969346541Z
Severity
  • 9.2 (Critical) CVSS_V4 - 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 Calculator
Summary
Crawl4AI - Server-Side Request Forgery via Direct Crawl Endpoints
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56266.json",
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-918"
    ]
}
References

Affected packages

Git / github.com/unclecode/crawl4ai

Affected ranges

Type
GIT
Repo
https://github.com/unclecode/crawl4ai
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7b280d36b150b544bf0994285b4755dca18c2149
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:kidocode:crawl4ai:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.8.7"
        }
    ]
}

Affected versions

0.*
0.3.4
docker-rebuild-v0.*
docker-rebuild-v0.8.6
v.*
v.3.72
v0.*
v0.0.75
v0.1.0
v0.2.0
v0.2.1
v0.2.4
v0.2.6
v0.2.7
v0.2.71
v0.2.72
v0.2.73
v0.2.74
v0.2.77
v0.3.0
v0.3.3
v0.3.6
v0.3.745
v0.4.24
v0.4.243
v0.5.0.post1
v0.6.3
v0.7.0
v0.7.1
v0.7.2
v0.7.3
v0.7.4
v0.8.6
vr0.*
vr0.6.0
vr0.6.0rc1
vr0.6.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56266.json"