CVE-2026-64606: Apache Fory

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

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 Fory: from 0.5.0, before 1.4.0 (fixed in 1.4.0)

Published 2026-07-21. Last modified 2026-07-27.