CVE-2026-25128 - fast-xml-parser has RangeError DoS Numeric Entities Bug

CVE ID : CVE-2026-25128 Published : Jan. 30, 2026, 3:14 p.m. | 1 hour, 6 minutes ago Description : 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 4.3.6 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. Severity: 0.0 | NA Visit the link for more details, such as CVSS details, affected products, timeline, and more...