CVE-2026-15555

HighCVSS 8.8/10Last modified Nov 1, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
Red HatRed Hat JBoss Enterprise Application Platform 7.4.25—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7—
Red HatRed Hat JBoss Enterprise Application Platform 8.1.8.GA—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—
Red HatRed Hat JBoss Enterprise Application Platform 8.1 for RHEL 10—

References

Timeline

Published
Aug 11, 2026
Last modified
Nov 1, 2026
NVD status
Awaiting Analysis

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CVE-2026-15555: High severity, CVSS 8.8 | Vulnix