PT-2026-71719 · Npm · Fast-Xml-Parser
CVE-2026-73569
·
Published
2026-07-21
·
Updated
2026-08-13
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
fast-xml-parser versions 5.9.3 through 5.10.0
Description
The software processes multiple DOCTYPE declarations within a single XML document via the
OrderedObjParser.js file. The addInputEntities() function resets the maxTotalExpansions and maxExpandedLength limits every time it is called. This allows a crafted XML document to repeatedly reset entity-expansion limits during a single parse operation, leading to excessive CPU usage, event-loop blocking, memory exhaustion, and process termination.Recommendations
Update to version 5.10.1.
Exploit
Fix
XML Entity Expansion
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Weakness Enumeration
Related Identifiers
Affected Products
Fast-Xml-Parser