CVE-2026-27942 - fast-xml-parser has stack overflow in XMLBuilder with preserveOrder

CVE-2026-27942 - fast-xml-parser has stack overflow in XMLBuilder with preserveOrder

https://cvefeed.io/rssfeed/latest.atom / Thu, 02/26/2026 - 05:03
CVE ID : CVE-2026-27942
Published : Feb. 26, 2026, 1:22 a.m. | 1 hour, 2 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. 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.
Severity: 0.0 | NA
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