CVE-2026-73569
HIGH
8,7
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
Description
AI Translation Available
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.
776
Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')
DraftCommon Consequences
Security Scopes Affected:
Availability
Potential Impacts:
Dos: Resource Consumption (Other)
Applicable Platforms
Languages:
Not Language-Specific, XML
https://github.com/NaturalIntelligence/fast-xml-parser/commit/4e546e03987662de5…
https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.10.1
https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA…