CVE-2026-44020
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk46th percentile - higher than 46% of all known CVEs
Summary
A vulnerability in Docling library versions 2.13.0 through 2.74.0 allows XML External Entity (XXE) attacks via parsing malicious USPTO patent XML files. An attacker can read arbitrary files from the server, perform SSRF attacks, or cause denial of service through entity expansion.
Risk Assessment
The risk includes sensitive data leakage, unauthorized access to internal network resources, and service disruption, potentially leading to severe security breaches and financial losses.
Recommendation
Immediately update Docling to version 2.74.0 or later, which includes a fix for XXE attacks.
Other vulnerabilities in Docling
See all- CVE-2026-47214High
In Docling prior to version 2.94.0, unsafe URI and path handling was found in the HTML backend. This vulnerability could allow an attacker to perform unauthorized operations on files or network resources.
- CVE-2026-44017High
A vulnerability in Docling before version 2.91.0 allows Zip Slip attacks during EasyOCR model downloads. An attacker can overwrite arbitrary files, leading to remote code execution, persistent backdoors, or data corruption.
- CVE-2026-44016High
In Docling versions 2.82.0 through 2.90.0, if the HTML backend was explicitly configured for rendering (disabled by default), the Playwright-based rendering feature could allow JavaScript execution and unrestricted network access when processing untrusted HTML documents. An attacker could craft malicious HTML that executes arbitrary JavaScript in the rendering context or makes unauthorized network requests to internal services.
Original NVD description (English source)
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.