CVE-2026-44020
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| docling-project | docling | >= 2.13.0, < 2.74.0 | affected |
Weaknesses
- CWE-776: CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
docling: Docling: Information disclosure via XML External Entity (XXE) vulnerability
Additional References
- https://access.redhat.com/security/cve/CVE-2026-44020
- https://bugzilla.redhat.com/show_bug.cgi?id=2492456
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44020.json
References
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