VDB

CVE-2026-86404

CVE-2026-86404 PUBLISHED CVSS 8.8 HIGH

Reported by redhat · Published September 7, 2026

EAP's Artemis deserialization configuration permits deserialization by default. ObjectMessage.getObject() uses ObjectInputStreamWithClassLoader, which implements allow-list/block-list filtering via its checkSecurity()/isTrustedType() method. However, by default both allow-list and block-list are empty. When the allow-list is empty (size == 0), isTrustedType() returns true for ALL classes. This means all classes are deserializable by default.

Risk Scores

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

Affected Products

VendorProductVersions
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.16.0-22.redhat_00057.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.3.14-11.SP11_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:1.5.26-2.Final_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.18.8-1.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.18.8-1.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.18.8-1.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.18.8-1.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.18.8-1.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.18.8-1.redhat_00003.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:5.0.31-3.SP2_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:1.10.0-46.Final_redhat_00044.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:4.1.135-1.Final_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:4.1.135-1.Final_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.5.5-30.SP12_redhat_00020.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.5.5-24.SP12_redhat_00016.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:2.2.40-1.SP3_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 80:7.4.25-2.GA_redhat_00001.1.el8eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 90:2.16.0-22.redhat_00057.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 90:2.3.14-11.SP11_redhat_00001.1.el9eap
Red HatRed Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 90:1.5.26-2.Final_redhat_00001.1.el9eap

…and 344 more

Timeline

  • Sep 7, 2026 CVE Published
  • Sep 8, 2026 EPSS Score
  • Sep 9, 2026 EPSS Score
  • Sep 12, 2026 EPSS Score
  • Sep 16, 2026 EPSS Score
  • Sep 18, 2026 EPSS Score
  • Sep 21, 2026 EPSS Score
  • Sep 22, 2026 EPSS Score
  • Sep 22, 2026 Distribution Patch
  • Sep 22, 2026 Security Advisory
  • Sep 23, 2026 EPSS Score
  • Sep 24, 2026 EPSS Score

References

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