Critical · published September 18, 2026
Mongoid contains an unsafe reflection weakness in the query path used for embedded documents. An application that passes an externally supplied field name to certain in-memory query methods may allow an unauthenticated party to obtain unintended disclosure of stored document data and to permanently remove stored records.
| Product | Versions | Fixed in |
|---|---|---|
| mongodb/mongoid | ≥ 7.5.0, < 7.5.4 | 7.5.4 |
| mongodb/mongoid | ≥ 7.6.0, < 7.6.2 | 7.6.2 |
| mongodb/mongoid | ≥ 8.0.0, < 8.0.12 | 8.0.12 |
| mongodb/mongoid | ≥ 8.1.0, < 8.1.13 | 8.1.13 |
| mongodb/mongoid | ≥ 9.0.0, < 9.0.12 | 9.0.12 |
| mongodb/mongoid | all versions | — |