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CVE-2026-27942 (GCVE-0-2026-27942)

Vulnerability from cvelistv5 – Published: 2026-02-26 01:22 – Updated: 2026-06-23 15:50
VLAI
Title
fast-xml-parser has stack overflow in XMLBuilder with preserveOrder
Summary
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
2.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-26 15:48 UTC
CWE
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
Impacted products
Vendor Product Version CPE status
NaturalIntelligence fast-xml-parser Affected: < 5.3.8
guessed Create a notification for this product.
Show details on NVD website
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