CVE-2026-33036 fast-xml-parser affected by numeric entity expansion bypassing all entity expansion limits (incomplete fix for CVE-2026-26278)

fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Versions 4.0.0-beta.3 through 5.5.5 contain a bypass vulnerability where numeric character references &NNN;, &xHH; and standard XML entities completely evade the entity expansion limits e.g.,...

CVE-2026-33036

CVE-2026-33036 concerns the fast-xml-parser library. A bypass vulnerability in versions 4.0.0-beta.3 through 5.5.5 allows numeric character references (&#NNN;, &#xHH;) and standard XML entities to evade entity expansion limits (maxTotalExpansions, maxExpandedLength) intended to fix CVE-2026-26278...

UBUNTU-CVE-2026-25128

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-rang...