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Medium 5.7Published May 14, 2026

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

Updated under an hour ago ()

Does this affect you?

It affects docling-project docling-graph. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
5.7 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-601, CWE-918
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
May 14, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
docling-project docling-graph
docling_project:docling_graph (from the name)
before 1.5.1
CNA record

References

  • x-refsource-confirm

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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