HIGH 8.8 NVD
CVE-2026-86404
EAP's Artemis deserialization configuration permits deserialization by default. ObjectMessage.getObject() uses ObjectInputStreamWithClassLoader, which implement
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.
References
- https://access.redhat.com/errata/RHSA-2026:53644
- https://access.redhat.com/security/cve/CVE-2026-86404
- https://bugzilla.redhat.com/show_bug.cgi?id=2477930
This high severity vulnerability with a CVSS score of 8.8 was published on 2026-09-07 via NVD.
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