cvedb.io
CVE-2026-48207
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-05-21T17:16:21.857 · Last modified 2026-06-17T10:54:55.450

Summary

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.

Affected products

apache — fory

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.