CVE-2026-15555

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 via deserialization gadget chains on every cluster node.

CVSS v3.1 Score

8.8
HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Published: 8/11/2026Modified: 8/14/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-15555 — A flaw was found in JBoss marshalling. The Infinispan session replication path d...

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.

CVE-2026-15555
NIST NVD

References (4)

https://access.redhat.com/errata/RHSA-2026:53644https://access.redhat.com/errata/RHSA-2026:53806https://access.redhat.com/security/cve/CVE-2026-15555https://bugzilla.redhat.com/show_bug.cgi?id=2480637