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.
References (3)
Scores
CVSS v3
7.5
EPSS
0.0005
EPSS Percentile
16.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-120
Status
published
Products (3)
fast-xml-parser_project/fast-xml-parser
< 4.5.4
naturalintelligence/fast-xml-parser
< 4.5.4
npm/fast-xml-parser
0 - 5.3.8npm
Published
Feb 26, 2026
Tracked Since
Feb 26, 2026