CVE-2026-48207
Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement
Deserialization of untrusted data in Apache Fory PyFory. 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.
| CWE | CWE-502 |
| Vendor | apache software foundation |
| Product | apache fory |
| Published | May 21, 2026 |
| Last Updated | May 21, 2026 |
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