CVE-2026-15555: Red Hat JBoss Enterprise Application Platform 7

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

  • Red Hat Red Hat JBoss Enterprise Application Platform 7
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4.25: before 7.4.25.GA-redhat-00001 (fixed in 7.4.25.GA-redhat-00001)
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 Els On Rhel 7: before 0:2.16.0-22.redhat_00057.1.el7eap (fixed in 0:2.16.0-22.redhat_00057.1.el7eap); before 0:2.3.14-11.SP11_redhat_00001.1.el7eap (fixed in 0:2.3.14-11.SP11_redhat_00001.1.el7eap); before 0:1.5.26-2.Final_redhat_00001.1.el7eap (fixed in 0:1.5.26-2.Final_redhat_00001.1.el7eap); before 0:2.18.8-1.redhat_00003.1.el7eap (fixed in 0:2.18.8-1.redhat_00003.1.el7eap); before 0:5.0.31-3.SP2_redhat_00001.1.el7eap (fixed in 0:5.0.31-3.SP2_redhat_00001.1.el7eap); before 0:1.10.0-46.Final_redhat_00044.1.el7eap (fixed in 0:1.10.0-46.Final_redhat_00044.1.el7eap); …
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 Els On Rhel 8: before 0:2.16.0-22.redhat_00057.1.el8eap (fixed in 0:2.16.0-22.redhat_00057.1.el8eap); before 0:2.3.14-11.SP11_redhat_00001.1.el8eap (fixed in 0:2.3.14-11.SP11_redhat_00001.1.el8eap); before 0:1.5.26-2.Final_redhat_00001.1.el8eap (fixed in 0:1.5.26-2.Final_redhat_00001.1.el8eap); before 0:2.18.8-1.redhat_00003.1.el8eap (fixed in 0:2.18.8-1.redhat_00003.1.el8eap); before 0:5.0.31-3.SP2_redhat_00001.1.el8eap (fixed in 0:5.0.31-3.SP2_redhat_00001.1.el8eap); before 0:1.10.0-46.Final_redhat_00044.1.el8eap (fixed in 0:1.10.0-46.Final_redhat_00044.1.el8eap); …
  • Red Hat Red Hat JBoss Enterprise Application Platform 7.4 Els On Rhel 9: before 0:2.16.0-22.redhat_00057.1.el9eap (fixed in 0:2.16.0-22.redhat_00057.1.el9eap); before 0:2.3.14-11.SP11_redhat_00001.1.el9eap (fixed in 0:2.3.14-11.SP11_redhat_00001.1.el9eap); before 0:1.5.26-2.Final_redhat_00001.1.el9eap (fixed in 0:1.5.26-2.Final_redhat_00001.1.el9eap); before 0:2.18.8-1.redhat_00003.1.el9eap (fixed in 0:2.18.8-1.redhat_00003.1.el9eap); before 0:5.0.31-3.SP2_redhat_00001.1.el9eap (fixed in 0:5.0.31-3.SP2_redhat_00001.1.el9eap); before 0:1.10.0-46.Final_redhat_00044.1.el9eap (fixed in 0:1.10.0-46.Final_redhat_00044.1.el9eap); …
  • Red Hat Red Hat JBoss Enterprise Application Platform 8
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.1
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.1 For Rhel 10: before 0:2.40.0-8.redhat_00024.1.el10eap (fixed in 0:2.40.0-8.redhat_00024.1.el10eap); before 0:4.1.7-1.SP1_redhat_00001.1.el10eap (fixed in 0:4.1.7-1.SP1_redhat_00001.1.el10eap); before 0:2.0.5-1.Final_redhat_00001.1.el10eap (fixed in 0:2.0.5-1.Final_redhat_00001.1.el10eap); before 0:1.85.0-1.redhat_00001.1.el10eap (fixed in 0:1.85.0-1.redhat_00001.1.el10eap); before 0:1.2.7-1.redhat_00002.1.el10eap (fixed in 0:1.2.7-1.redhat_00002.1.el10eap); before 0:801.8.0-1.GA_redhat_00001.1.el10eap (fixed in 0:801.8.0-1.GA_redhat_00001.1.el10eap); …
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.1 For Rhel 8: before 0:2.40.0-8.redhat_00024.1.el8eap (fixed in 0:2.40.0-8.redhat_00024.1.el8eap); before 0:4.1.7-1.SP1_redhat_00001.1.el8eap (fixed in 0:4.1.7-1.SP1_redhat_00001.1.el8eap); before 0:2.0.5-1.Final_redhat_00001.1.el8eap (fixed in 0:2.0.5-1.Final_redhat_00001.1.el8eap); before 0:1.85.0-1.redhat_00001.1.el8eap (fixed in 0:1.85.0-1.redhat_00001.1.el8eap); before 0:1.2.7-1.redhat_00002.1.el8eap (fixed in 0:1.2.7-1.redhat_00002.1.el8eap); before 0:801.8.0-1.GA_redhat_00001.1.el8eap (fixed in 0:801.8.0-1.GA_redhat_00001.1.el8eap); …
  • Red Hat Red Hat JBoss Enterprise Application Platform 8.1 For Rhel 9: before 0:2.40.0-8.redhat_00024.1.el9eap (fixed in 0:2.40.0-8.redhat_00024.1.el9eap); before 0:4.1.7-1.SP1_redhat_00001.1.el9eap (fixed in 0:4.1.7-1.SP1_redhat_00001.1.el9eap); before 0:2.0.5-1.Final_redhat_00001.1.el9eap (fixed in 0:2.0.5-1.Final_redhat_00001.1.el9eap); before 0:1.85.0-1.redhat_00001.1.el9eap (fixed in 0:1.85.0-1.redhat_00001.1.el9eap); before 0:1.2.7-1.redhat_00002.1.el9eap (fixed in 0:1.2.7-1.redhat_00002.1.el9eap); before 0:801.8.0-1.GA_redhat_00001.1.el9eap (fixed in 0:801.8.0-1.GA_redhat_00001.1.el9eap); …
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack

Published 2026-08-11. Last modified 2026-10-09.