CVE-2026-66713
CriticalCVSS 9.8Exploitation Probability (EPSS)
Elevated risk65th percentile - higher than 65% of all known CVEs
Summary
Apache Axis2/Java up to version 2.0.0 has a deserialization vulnerability in the Tribes clustering component on Tomcat (disabled by default). An unauthenticated remote attacker with network access to the cluster port can deliver a crafted serialized Java object, leading to arbitrary code execution. The issue is fixed by removing the clustering feature in version 2.0.1.
Risk Assessment
An attacker can remotely execute arbitrary code on the server, leading to full system compromise and breach of data confidentiality, integrity, and availability.
Recommendation
Upgrade Apache Axis2/Java to version 2.0.1, which removes the clustering feature and eliminates the vulnerability.
Original NVD description (English source)
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) allows an unauthenticated remote attacker with network access to the clustering port to execute arbitrary code via a crafted serialized Java object delivered to the cluster channel and deserialized in org.apache.axis2.clustering.tribes.Axis2ChannelListener#messageReceived. Users are recommended to upgrade to version 2.0.1, which fixes this issue by removing the clustering feature entirely.