What’s Vulnerable › Vulnerabilities

CVE-2026-64606: Apache Fory, Apache Fory: Class-registration bypass through an auto-admitted SerializedLambda capturing interface

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-21 · updated 2026-10-24
• Weakness: CWE-502

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.

Affected products

• Apache Software Foundation Apache Fory: from 0.5.0 before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Fory 1.4.0. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread/py6fbvm9nk1gxdd85rbzbozwzfh0jrsc
• http://www.openwall.com/lists/oss-security/2026/07/21/4

Get alerted when CVE-2026-64606 or the next vulnerability affects your stack