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Package · npm

fast-xml-parser

13 known vulnerabilities.

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  • Low 3.7
    CVE-2026-126066

    fast-xml-parser: Quadratic CPU consumption scanning unterminated stop-node tags

    fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Prior to 5.12.0, when the non-default stopNodes option is enabled, readStopNodeData() in OrderedObjParser.js calls readTagExp() for each less-than character…

    NaturalIntelligence fast-xml-parser fast-xml-parser npm
  • Low 2.7
    CVE-2026-27942

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

    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:…

    NaturalIntelligence fast-xml-parser fast-xml-parser node-webfont Debian Ubuntu npm
  • Low —
    GHSA-gpv5-7x3g-ghjv

    fast-xml-parser regex vulnerability patch could be improved from a safety perspective

    ### Summary This is a comment on https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-6w63-h3fj-q4vw and the patches fixing it. ### Details The code which validates a name calls the validator: https://github.com/NaturalIntelligence/…

    fast-xml-parser npm