Description
The package algoliasearch-helper before 3.6.2 are vulnerable to Prototype Pollution due to use of the merge function in src/SearchParameters/index.jsSearchParameters._parseNumbers without any protection against prototype properties. Note that this vulnerability is only exploitable if the implementation allows users to define arbitrary search patterns.
Remediation
References
https://github.com/algolia/algoliasearch-helper-js/commit/4ff542b70b92a6b81cce8b9255700b0bc0817edd
https://snyk.io/vuln/SNYK-JS-ALGOLIASEARCHHELPER-1570421
https://github.com/algolia/algoliasearch-helper-js/blob/3.5.5/src/SearchParameters/index.js%23L291