What is CVE-2026-66713?

CVE-2026-66713 is a critical-severity vulnerability in Apache Software Foundation Axis2/java, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-07-28.

How severe is CVE-2026-66713?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Apache Software Foundation Axis2/java

CVE-2026-66713

Deserialization of Untrusted Data (CWE-502) in the Tribes-based clustering component in Apache Software Foundation Apache Axis2/Java through 2.0.0 on Apache Tomcat (only when Tribes clustering is enabled, which is off by default) all…

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Apache Software Foundation Axis2/java — versions 0

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

security@apache.org (patch)
security@apache.org (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-66713?: CVE-2026-66713 is a critical-severity vulnerability in Apache Software Foundation Axis2/java, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-07-28.
How severe is CVE-2026-66713?: Critical severity. CVSS v3 base score is 9.8 out of 10.