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CVE PROGRAM SOURCE RECORD2.7 Low

CVE-2026-27942

fast-xml-parser has stack overflow in XMLBuilder with preserveOrder

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. Prior to version 5.3.8, the application crashes with stack overflow when user use XML builder with `preserveOrder:true`. Version 5.3.8 fixes the issue. As a workaround, use XML builder with `preserveOrder:false` or check the input data before passing to builder.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

NaturalIntelligence fast-xml-parser

  • < 5.3.8affected

References