Critical [CVE-2026-44020] Information disclosure via XML External Entity (XXE) vulnerability
This critical-severity Red Hat Linux advisory covers CVE-2026-44020 affecting Red Hat OpenShift AI 3.4.
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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.
A flaw was found in docling. This is an Important vulnerability in docling, as shipped with Red Hat OpenShift AI, due to an XML External Entity (XXE) flaw in its USPTO patent XML parser.
An attacker could exploit this by providing specially crafted XML files, leading to unauthorized access to local files, Server-Side Request Forgery (SSRF), or denial of service. The broad impact on data confidentiality and system availability elevates this to an Important severity.
Red Hat severity: Important — CVSS 9.4 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H). Weakness: CWE-611.
Affected Red Hat products: Red Hat OpenShift AI 3.4. Red Hat fixing advisory: RHSA-2026:60520.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
- 2.74.0
- rhoai/odh-autorag-rhel9:1786612637
- RHSA-2026:60520
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
Mitigation
Upgrade to a fixed release: 2.74.0, rhoai/odh-autorag-rhel9:1786612637, RHSA-2026:60520. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 13 days ago·verify at source
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