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.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Red Hat Red Hat JBoss Enterprise Application Platform 7 affected —
Red Hat Red Hat JBoss Enterprise Application Platform 7 affected —
Red Hat Red Hat JBoss Enterprise Application Platform 8 affected —
Red Hat Red Hat JBoss Enterprise Application Platform 8 affected —
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack affected —
Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack affected —

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No data.

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Project Subscriptions

Vendors Products
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Jbosseapxp Subscribe
Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/security/cve/CVE-2026-15555 cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2480637 cve-icon
History

Tue, 11 Aug 2026 09:15:00 +0000

Type Values Removed Values Added
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.
Title Jboss-marshalling-river: wildfly-clustering-infinispan-marshalling: jboss deserialization rce via unfiltered river unmarshaller
First Time appeared Redhat
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
Weaknesses CWE-502
CPEs cpe:/a:redhat:jboss_enterprise_application_platform:7
cpe:/a:redhat:jboss_enterprise_application_platform:8
cpe:/a:redhat:jbosseapxp
Vendors & Products Redhat
Redhat jboss Enterprise Application Platform
Redhat jbosseapxp
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-08-11T08:49:40.634Z

Reserved: 2026-07-13T04:57:54.377Z

Link: CVE-2026-15555

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-11T11:00:04Z

Weaknesses