Is CVE-2026-64606 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-64606?

CVE-2026-64606 has a CVSS v3 severity of CRITICAL (9.8).

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CVE-2026-64606

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.