Paper/Archive/CVE-2026-64606

CVE-2026-64606

Apache Software Foundation Apache Fory — Apache Fory, Apache Fory: Class-registration bypass through an auto-admitted SerializedLambda capturing interface

EPSS 0.8%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (ADP)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 56.0.560 × 2011.2 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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

ProductAffectedFixed inSource

Apache Fory0.11.0 – < 1.4.01.4.0CNA

Apache Fory0.5.0 – < 0.11.00.11.0CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorylists.apache.org/thread/py6fbvm9nk1gxdd85rbzbozwzfh0jrsc refopenwall.com/lists/oss-security/2026/07/21/4