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CVE-2026-48207

CRITICAL
9.8
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-48207
State
PUBLISHED
Assigner
apache
Reserved
2026-05-21 12:06 UTC
Published
2026-05-21 15:51 UTC
Last updated
2026-05-21 18:37 UTC
Primary CWE
CWE-502
CWE-502 Deserialization of Untrusted Data
Vendor / Product
Apache Software Foundation / Apache Fory
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Apache Software Foundation Apache Fory — 0.13.0 < 1.0.0
Weakness (CWE)
CWESourceDescription
CWE-502 cna CWE-502 Deserialization of Untrusted Data
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 adp CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References (1)
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