Description
This affects all versions of package json-ptr. The issue occurs in the set operation (https://flitbit.github.io/json-ptr/classes/_src_pointer_.jsonpointer.htmlset) when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check the key being set, leading to a prototype pollution.
Remediation
References
https://github.com/flitbit/json-ptr/blob/master/src/util.ts%23L174
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038396
https://snyk.io/vuln/SNYK-JS-JSONPTR-1016939
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