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BDVDB
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Vulnerabilities

CVE-2026-73569 | BDVDB-2026-359102 Detail

NaturalIntelligencefast-xml-parser

Description#

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities(). addInputEntities() resets maxTotalExpansions and maxExpandedLength every time it is called, allowing additional DOCTYPE declarations to repeatedly reset the configured entity-expansion limits during one parse operation. A crafted XML document can then cause excessive CPU use, event-loop blocking, memory exhaustion, and process termination. This issue is fixed in version 5.10.1.

Impact#

Per CVSS v4.0: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.

Weaknesses#

  • CWE-776 Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

References#

Exploit#

No public exploit known

History#

  1. Version 1Record published in the CVE List.