CVE-2026-15555

EUVD-2026-55982
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 14.54%
Common Weakness Enumeration
References
https://access.redhat.com/errata/RHSA-2026:53644
https://access.redhat.com/security/cve/CVE-2026-15555
https://bugzilla.redhat.com/show_bug.cgi?id=2480637