CVE-2026-48207 (GCVE-0-2026-48207)

Vulnerability from cvelistv5 – Published: 2026-05-21 15:51 – Updated: 2026-05-21 18:37
VLAI
Title
Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-21 17:10 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Fory Affected: 0.13.0 , < 1.0.0 (semver)
guessed Create a notification for this product.
Credits
Lide Wen
Show details on NVD website
To clipboard 

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