Mongoose is a MongoDB object modeling tool designed to work in an asynchronous environment. Prior to 6.13.10, 7.8.10, 8.24.1, and 9.7.2, passing a user-controlled update such as MyModel.updateOne(filter, req.body) can exploit Mongoose update casting with a __proto__.x dotted path under $set. Schema.prototype.path and Schema.prototype._getPathType can treat inherited properties of schema.paths and schema.nested as schema types, allowing the casting process to set $fullPath and $parentSchemaDocArray on Object.prototype before throwing.
This prototype pollution makes those properties visible on newly created objects and can cause application integrity and availability impacts. This issue is fixed in versions 6.13.10, 7.8.10, 8.24.1, and 9.7.2.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://github.com/Automattic/mongoose/commit/35a3f33bc9a0a28671f99e3c501000042…
security-advisories@github.com
https://github.com/Automattic/mongoose/commit/7285466b860d3b511f8d07b2ab7265670…
security-advisories@github.com
https://github.com/Automattic/mongoose/commit/953d085bee5a16b5d6c5af33a156e6314…
security-advisories@github.com
https://github.com/Automattic/mongoose/commit/fab793b747131c68927888cba41cf3e6d…
security-advisories@github.com
https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw
security-advisories@github.com