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CVE-2026-66713 is a deserialization of untrusted data vulnerability in the Tribes-based clustering component of Apache Axis2/Java through 2.0.0 when deployed on Apache Tomcat. With Tribes clustering enabled, a crafted serialized Java object sent through the cluster channel is deserialized by org.apache.axis2.clustering.tribes.Axis2ChannelListener#messageReceived without adequate validation, enabling remote code execution. Tribes clustering is disabled by default.
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No public exploit code observed for this vulnerability.
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A remote code execution vulnerability caused by unsafe deserialization in the Tribes-based clustering component of Apache Axis2/Java through 2.0.0 when deployed on Apache Tomcat with Tribes clustering enabled.
A deserialization of untrusted data vulnerability in the Tribes-based clustering component of Apache Axis2/Java that can allow unauthenticated remote code execution when clustering is enabled.
A remote code execution vulnerability caused by unsafe deserialization in the Tribes-based clustering component of Apache Axis2/Java through 2.0.0 when deployed on Apache Tomcat with Tribes clustering enabled.
A low-severity deserialization vulnerability in Apache Axis2/Java through 2.0.0 that can allow unauthenticated remote code execution on Apache Tomcat when the Tribes clustering feature is enabled.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
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