PYSEC-2026-2247

See a problem?
Import Source
https://github.com/pypa/advisory-database/blob/main/vulns/ormar/PYSEC-2026-2247.yaml
JSON Data
https://api.osv.dev/v1/vulns/PYSEC-2026-2247
Aliases
Published
2026-03-19T21:17:09Z
Modified
2026-07-13T07:15:39Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

PyPI / ormar

Package

Name
ormar
View open source insights on deps.dev
Purl
pkg:pypi/ormar

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.23.1

Affected versions

0.*
0.1.0
0.1.1
0.1.2
0.1.3
0.2.1
0.2.2
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.3.7
0.3.8
0.3.9
0.3.10
0.3.11
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.5.5
0.6.0
0.6.1
0.6.2
0.7.0
0.7.1
0.7.2
0.7.3
0.7.4
0.7.5
0.8.0
0.8.1
0.9.0
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
0.10.0
0.10.1
0.10.2
0.10.3
0.10.4
0.10.5
0.10.6
0.10.7
0.10.8
0.10.9
0.10.10
0.10.11
0.10.12
0.10.13
0.10.14
0.10.15
0.10.16
0.10.17
0.10.18
0.10.19
0.10.20
0.10.21
0.10.22
0.10.23
0.10.24
0.10.25
0.11.0
0.11.1
0.11.2
0.11.3
0.12.0
0.12.1
0.12.2
0.12.3
0.20.0
0.20.1
0.20.2
0.21.0
0.22.0
0.23.0

Database specific

source 
"https://github.com/pypa/advisory-database/blob/main/vulns/ormar/PYSEC-2026-2247.yaml"