Docling-Graph: SSRF via Missing Internal IP Validation in URLInputHandler_CVE-2026-44520

{
    "lastseen": "",
    "description": "Docling-Graph turns documents into validated Pydantic objects, then builds a directed knowledge graph with explicit semantic relationships. Prior to 1.5.1, the URLInputHandler class in docling_graph/core/input/handlers.py makes HTTP requests to user-supplied URLs without validating whether the target resolves to a private, loopback, or link-local IP address. The URLValidator only checks for a valid scheme and non-empty netloc, performing no IP-level validation. Additionally, requests.head() was called with allow_redirects=True, allowing an attacker to redirect requests to internal endpoints via an intermediary URL. An attacker who can control the --source CLI argument or PipelineConfig.source API parameter can trigger Server-Side Request Forgery (SSRF). This vulnerability is fixed in 1.5.1.",
    "published": "2026-05-14T16:56:58.110Z",
    "modified": "2026-05-14T16:56:58.110Z",
    "type": "cve",
    "title": "Docling-Graph: SSRF via Missing Internal IP Validation in URLInputHandler",
    "source": "GitHub_M",
    "references": "https://github.com/docling-project/docling-graph/security/advisories/GHSA-fqph-j6v6-jvgx",
    "id": "CVE-2026-44520",
    "bulletinFamily": "",
    "cwe": [
        "CWE-601",
        "CWE-918"
    ],
    "cvelist": null,
    "sourceData": "docling-project docling-graph < 1.5.1",
    "sourceHref": "",
    "cvss": {
        "score": 5.7,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "docling-graph",
    "version": "< 1.5.1",
    "vendor": "docling-project",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
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    "ai_score": 0
}