Deserialization Vulnerability in Apache Fory Product by Apache
CVE-2026-48207

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Fory
Vendor
CVE Published:
21 May 2026

What is CVE-2026-48207?

A vulnerability exists in Apache Fory's ReduceSerializer due to improper handling of deserialization, which could allow an attacker to bypass DeserializationPolicy validation hooks during key operations such as state restoration and global-name resolution. This risk arises when deserializing data from untrusted sources in Python-native mode with strict mode turned off. To mitigate potential exploits, users must upgrade to version 1.0.0 or later, which integrates enhanced validation measures to protect against this issue.

Affected Version(s)

Apache Fory 0.13.0 < 1.0.0

References

https://fory.apache.org/security/#cve-2026-48207-pyfory-r...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Lide Wen
.