CVE-2026-27953
ormar is a async mini ORM for Python. Versions 0.23.0 and below are vulnerable to Pydantic validation bypass through the model constructor, allowing any unauthenticated user to skip all field validation by injecting "__pk_only__": true into a JSON request body. By injecting "__pk_only__": true into a JSON request body, an unauthenticated attacker can skip all field validation and persist unvalidated data directly to the database. A secondary __excluded__ parameter injection uses the same pattern to selectively nullify arbitrary model fields (e.g., email or role) during construction. This affects ormar's canonical FastAPI integration pattern recommended in its official documentation, enabling privilege escalation, data integrity violations, and business logic bypass in any application using ormar.Model directly as a request body parameter. This issue has been fixed in version 0.23.1.
Debolezza
ormar is a async mini ORM for Python. Versions 0.23.0 and below are vulnerable to Pydantic validation bypass through the model constructor, allowing any unauthenticated user to skip all field validation by injecting "__pk_only__": true into a JSON request body. By injecting "__pk_only__": true into a JSON request body, an unauthenticated attacker can skip all field validation and persist unvalidated data directly to the database. A secondary __excluded__ parameter injection uses the same pattern to selectively nullify arbitrary model fields (e.g., email or role) during construction. This affects ormar's canonical FastAPI integration pattern recommended in its official documentation, enabling privilege escalation, data integrity violations, and business logic bypass in any application using ormar.Model directly as a request body parameter. This issue has been fixed in version 0.23.1.
Prodotti interessati
- collerek ormar
Riferimenti
- https://github.com/ormar-orm/ormar/blob/master/examples/fastapi_quick_start.py#L55
- https://github.com/ormar-orm/ormar/blob/master/ormar/fields/foreign_key.py#L41
- https://github.com/ormar-orm/ormar/blob/master/ormar/models/helpers/pydantic.py#L108
- https://github.com/ormar-orm/ormar/blob/master/ormar/models/model.py#L89
- https://github.com/ormar-orm/ormar/blob/master/ormar/models/newbasemodel.py#L128
- https://github.com/ormar-orm/ormar/blob/master/ormar/models/newbasemodel.py#L292
Trova il bug prima di un attaccante.
Accedi con GitHub e avvia il tuo primo audit in meno di un minuto. Il piano gratuito non richiede carta di credito.