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.
CVE-2026-44020
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 53% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation1% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 47%
- KEV
- Not listed
Published
June 3, 2026
Last Modified
August 28, 2026
Advisory Details (1)
Auto-updated Jun 24, 2026Unsafe XML Entity Expansion in USPTO Patent Backend · Advisory · docling-project/docling · GitHub
Affected: version 2.74.0. The parser now uses
https://github.com/docling-project/docling/security/advisories/GHSA-m88r-rg27-5xfgVendor Advisories for CVE-2026-44020(2)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Patch Availability(1)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | rhoai/odh-autorag-rhel9:1786612637 | 2026-08-27 | redhat |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(1 across 1 ecosystem)
PyPI(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| docling | 2.13.0 ... 2.73.1 (84 versions) | 2.74.0 | — |
Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 34× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 114 total refreshes for this CVE.
- 2026-09-18 19:28 UTCEPSS rescore
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- 2026-08-28 16:46 UTCVendor advisory
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- 2026-08-28 15:59 UTCVendor advisory
- 2026-08-27 14:25 UTCEPSS rescore
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Frequently asked(5)
What is CVE-2026-44020?
When was CVE-2026-44020 disclosed?
Is CVE-2026-44020 actively exploited?
What is the CVSS score of CVE-2026-44020?
How do I remediate CVE-2026-44020?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44020
Is Your Infrastructure Affected by CVE-2026-44020?
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