Vulnerability Description
A flaw was found in JBoss marshalling. The Infinispan session replication path deserializes replicated session data via the JBoss Marshalling River unmarshaller with no class filtering — enabling RCE via deserialization gadget chains on every cluster node.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:53644
- https://access.redhat.com/errata/RHSA-2026:53645
- https://access.redhat.com/errata/RHSA-2026:53646
- https://access.redhat.com/errata/RHSA-2026:53806
- https://access.redhat.com/security/cve/CVE-2026-15555
- https://bugzilla.redhat.com/show_bug.cgi?id=2480637
FAQ
What is CVE-2026-15555?
CVE-2026-15555 is a vulnerability with a CVSS score of 8.8 (HIGH). A flaw was found in JBoss marshalling. The Infinispan session replication path deserializes replicated session data via the JBoss Marshalling River unmarshaller with no class filtering — enabling RCE ...
How severe is CVE-2026-15555?
CVE-2026-15555 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-15555?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.