CVE-2026-64606
Received Received - Intake

Java Deserialization Flaw in Apache Fury

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Apache Software Foundation

Description
Deserialization of untrusted data vulnerability that may allow class-registration checks to be bypassed during Java lambda deserialization. Only lambda capture class is affected This issue affects Apache Fory: from before 1.4.0. Users are recommended to upgrade to version 1.4.0, which fixes the issue.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-64606
EUVD
EUVD-2026-46173

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
apache fory From 1.4.0 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

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Executive Summary

This vulnerability is a deserialization flaw in Apache Fory that allows bypassing class-registration checks during Java lambda deserialization. It specifically affects only the lambda capture class.

Detection Guidance

Detection involves checking for vulnerable Apache Fory versions. Use commands like 'find / -name "fory*.jar" 2>/dev/null' to locate installations. Verify version with 'java -jar fory.jar --version' or check package managers (e.g., 'dpkg -l | grep fory' on Debian). Ensure version is 1.4.0 or later.

Impact Analysis

An attacker could exploit this to execute arbitrary code or cause denial of service by deserializing untrusted data. Upgrading to version 1.4.0 or later mitigates this risk.

Compliance Impact

This vulnerability involves deserialization of untrusted data in Apache Fory, which could potentially lead to unauthorized code execution or data breaches. Such issues may impact compliance with GDPR by risking personal data exposure or HIPAA by compromising protected health information if exploited.

Mitigation Strategies

Upgrade Apache Fory to version 1.4.0 or later to address the deserialization vulnerability. This version includes the fix for the class-registration bypass issue during Java lambda deserialization.

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