express-xss-sanitizer has an unbounded recursion depth
The express-xss-sanitizer (aka Express XSS Sanitizer) package through 2.0.0 for Node.js has an unbounded recursion depth in sanitize in lib/sanitize.js for a JSON request body.
Advisories for Npm/Express-Xss-Sanitizer package
2025
2022
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
The package express-xss-sanitizer before 1.1.3 is vulnerable to Prototype Pollution via the allowedTags attribute, allowing the attacker to bypass xss sanitization.