Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/Automattic/mongoose/commit/35a3f33bc9a0a28671f99e3c5010000425
- https://github.com/Automattic/mongoose/commit/7285466b860d3b511f8d07b2ab72656703
- https://github.com/Automattic/mongoose/commit/953d085bee5a16b5d6c5af33a156e6314d
- https://github.com/Automattic/mongoose/commit/fab793b747131c68927888cba41cf3e6d6
- https://github.com/Automattic/mongoose/security/advisories/GHSA-664h-wqgq-64gw
FAQ
What is CVE-2026-73562?
CVE-2026-73562 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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(filt...
How severe is CVE-2026-73562?
CVE-2026-73562 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-73562?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.