Xml2js is a Node.js library designed for converting XML documents into JavaScript objects, simplifying data handling in applications that interact with XML-based data sources. Version 0.2.2 builds upon the foundation of its predecessor, version 0.2.1, offering key improvements in its dependencies. Most notably, the required version of the 'sax' parser was updated from '>=0.1.1' to '>=0.4.2', potentially introducing performance enhancements or bug fixes inherent in the newer sax parser version. This change can influence how efficiently and accurately the library processes XML input.
Developers considering xml2js should be aware of its core functionality: parsing XML into readily usable JavaScript objects, streamlining data extraction and manipulation. The library supports customization options for controlling the parsing process, influencing things like attribute handling and array formation. Both versions leverage 'zap', 'docco', and 'coffee-script' in their development dependencies, tools essential for testing, documentation, and code maintainability. The consistent Github repository link indicates a stable development environment. The releases, separated by only a few days in November 2012, likely address specific issues or incorporate improvements identified shortly after the 0.2.1 release. While seemingly minor, the sax dependency update in 0.2.2 could offer a more robust and reliable XML parsing experience.
All the vulnerabilities related to the version 0.2.2 of the package
xml2js is vulnerable to prototype pollution
xml2js versions before 0.5.0 allows an external attacker to edit or add new properties to an object. This is possible because the application does not properly validate incoming JSON keys, thus allowing the __proto__ property to be edited.
