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CVE-2026-25128

fast-xml-parser has RangeError DoS Numeric Entities Bug PUBLISHED

Description (CNA)

fast-xml-parser allows users to validate XML, parse XML to JS object, or build XML from JS object without C/C++ based libraries and no callback. In versions 5.0.9 through 5.3.3, a RangeError vulnerability exists in the numeric entity processing of fast-xml-parser when parsing XML with out-of-range entity code points (e.g., `�` or `�`). This causes the parser to throw an uncaught exception, crashing any application that processes untrusted XML input. Version 5.3.4 fixes the issue.

Affected (CNA)

Vendor / productVersions
NaturalIntelligence / fast-xml-parseraffected >= 5.0.9, <= 5.3.3

CWE

CWE-20, CWE-248

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.