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CVE-2026-44020

CVE-2026-44020 · Docling: Unsafe XML Entity Expansion in USPTO Patent Backend

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Docling simplifies document processing by parsing diverse formats and providing integrations with the generative AI ecosystem. From 2.13.0 until 2.74.0, the USPTO patent XML parser used the standard xml.sax.parseString() without protection against XML External Entity (XXE) attacks. An attacker could craft malicious USPTO patent XML files with external entity references that could read arbitrary files from the server filesystem, perform Server-Side Request Forgery (SSRF) attacks, or cause denial of service through entity expansion (Billion Laughs attack). The vulnerability affects three USPTO patent format parsers: ICE (v4.x), Grant v2.5, and Application v1.x. This vulnerability is fixed in 2.74.0.

CVSS 7.5 · High · EPSS 0.6% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • docling

    Versions
    • >= 2.13.0, < 2.74.0: Affected

    No fix published

  • docling PyPI

    Versions
    • 2.13.0
    • 2.14.0
    • 2.15.0
    • 2.15.1
    • 2.16.0
    • 2.17.0
    • 2.18.0
    • 2.19.0
    • 2.20.0
    • 2.21.0
    • 2.22.0
    • 2.23.0
    • 2.23.1
    • 2.24.0
    • 2.25.0
    • 2.25.1
    • 2.25.2
    • 2.26.0
    • 2.27.0
    • 2.28.0
    • 2.28.1
    • 2.28.2
    • 2.28.3
    • 2.28.4
    • 2.29.0
    • 2.30.0
    • 2.31.0
    • 2.31.1
    • 2.31.2
    • 2.32.0
    • 2.33.0
    • 2.34.0
    • 2.35.0
    • 2.36.0
    • 2.36.1
    • 2.37.0
    • 2.38.0
    • 2.38.1
    • 2.39.0
    • 2.40.0
    • 2.41.0
    • 2.42.0
    • 2.42.1
    • 2.42.2
    • 2.43.0
    • 2.44.0
    • 2.45.0
    • 2.46.0
    • 2.47.0
    • 2.47.1
    • 2.48.0
    • 2.49.0
    • 2.50.0
    • 2.51.0
    • 2.52.0
    • 2.53.0
    • 2.54.0
    • 2.55.0
    • 2.55.1
    • 2.56.0
    • 2.56.1
    • 2.57.0
    • 2.58.0
    • 2.59.0
    • 2.60.0
    • 2.60.1
    • 2.61.0
    • 2.61.1
    • 2.61.2
    • 2.62.0
    • 2.63.0
    • 2.64.0
    • 2.64.1
    • 2.65.0
    • 2.66.0
    • 2.67.0
    • 2.68.0
    • 2.69.0
    • 2.69.1
    • 2.70.0
    • 2.71.0
    • 2.72.0
    • 2.73.0
    • 2.73.1
    Affected ranges
    • ECOSYSTEM: ≥ 2.13.0, < 2.74.0

    Update to 2.74.0

Original sources

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