PYSEC-2026-2984
See a problem?- Import Source
- https://github.com/pypa/advisory-database/blob/main/vulns/pyfory/PYSEC-2026-2984.yaml
- JSON Data
- https://api.osv.dev/v1/vulns/PYSEC-2026-2984
- Aliases
- Published
- 2026-07-13T15:19:10.366997Z
- Modified
- 2026-07-13T16:32:42.676818664Z
- 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
- Apache Fory PyFory Deserialization of Untrusted Data
- Details
-
Fory PyFory's ReduceSerializer could bypass documented DeserializationPolicy validation hooks during reduce-state restoration and global-name resolution. An application is vulnerable if it deserializes attacker-controlled data using PyFory Python-native mode with strict mode disabled and relies on DeserializationPolicy to restrict unsafe classes, functions, or module attributes.
This issue affects Apache Fory: from before 1.0.0.
Mitigation: Users of Apache Fory are recommended to upgrade to version 1.0.0 or later, which enforces DeserializationPolicy validation for the affected ReduceSerializer paths and thus fixes this issue.
- References
-
- https://nvd.nist.gov/vuln/detail/CVE-2026-48207
- https://fory.apache.org/security/#cve-2026-48207-pyfory-reduceserializer-deserializationpolicy-bypass
- https://github.com/apache/fory
- http://www.openwall.com/lists/oss-security/2026/05/21/10
- https://pypi.org/project/pyfory
- https://github.com/advisories/GHSA-m5gw-83w2-7749
Affected packages
PyPI / pyfory
Package
- Name
- pyfory
- View open source insights on deps.dev
- Purl
- pkg:pypi/pyfory