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CVE-2026-73562GHSA-664H-WQGQ-64GWBIT-MONGOOSE-2026-73562

Mongoose: Prototype pollution in the update casting via __proto__-prefixed dotted path (Schema._getSchema/path getter)

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.13.10, 7.8.10, 8.24.1, 9.7.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: yes
  • Technical impact: partial

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: yes · Technical impact: partial

  3. Record last updated

Affected versions

  • Automattic mongoose

    fixed in 6.13.10; From 7.0.0 · fixed in 7.8.10; From 8.0.0 · fixed in 8.24.1; From 9.0.0 · fixed in 9.7.2

  • mongoosenpm

    fixed in 6.13.10

  • mongoosenpm

    From 7.0.0 · fixed in 7.8.10

  • mongoosenpm

    From 8.0.0 · fixed in 8.24.1

  • mongoosenpm

    From 9.0.0 · fixed in 9.7.2

References 5

GitHub · Automattic/mongoose