Docling's METS GBS backend is vulnerable to XML Entity Expansion (XXE) attacks

Docling's METS GBS backend is vulnerable to XML Entity Expansion XXE attacks thru 2.61.0. The backend extracts and validates XML files from .tar.gz archives using etree.fromstring without disabling entity resolution. An attacker can craft a malicious XML file with nested entity definitions XML Bo...

CVE-2026-31248

Docling's METS GBS backend is vulnerable to XML Entity Expansion XXE attacks thru 2.61.0. The backend extracts and validates XML files from .tar.gz archives using etree.fromstring without disabling entity resolution. An attacker can craft a malicious XML file with nested entity definitions XML Bo...

CVE-2026-31248

Docling versions prior to 2.61.1 are vulnerable to an XML Entity Expansion (XXE) attack in the METS GBS backend . The root cause is the use of etree.fromstring() to extract and validate XML files from .tar.gz archives without disabling entity resolution. An attacker can provide a malicious archiv...