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CVE-2026-25128 (GCVE-0-2026-25128)

Vulnerability from cvelistv5 – Published: 2026-01-30 15:14 – Updated: 2026-02-11 18:38
VLAI
Title
fast-xml-parser has RangeError DoS Numeric Entities Bug
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. 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-range entity code points (e.g., `�` or `�`). This causes the parser to throw an uncaught exception, crashing any application that processes untrusted XML input. Version 5.3.4 fixes the issue.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-30 15:40 UTC
CWE
  • CWE-20 - Improper Input Validation
  • CWE-248 - Uncaught Exception
Assigner
References
Impacted products
Vendor Product Version CPE status
NaturalIntelligence fast-xml-parser Affected: >= 5.0.9, <= 5.3.3
guessed Create a notification for this product.
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