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CVE-2026-44520— Docling-Graph: SSRF via Missing Internal IP Validation in URLInputHandler

CVSS 5.7 · Medium EPSS 0.03% · P8
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I. Basic Information for CVE-2026-44520

Vulnerability Information
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Vulnerability Title
Docling-Graph: SSRF via Missing Internal IP Validation in URLInputHandler
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
docling-projectdocling-graph < 1.5.1 -

II. Public POCs for CVE-2026-44520

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III. Intelligence Information for CVE-2026-44520

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IV. Related Vulnerabilities

Same vendor: docling-project
Same weakness: CWE-601

V. Comments for CVE-2026-44520

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