Critical (9.8) in redhat jboss enterprise application platform. EPSS 39% chance of exploitation in the next 30 days.
HTTPServerILServlet.java in JMS over HTTP Invocation Layer of the JbossMQ implementation, which is enabled by default in Red Hat Jboss Application Server <= Jboss 4.X does not restrict the classes for which it performs deserialization, which allows remote attackers to execute arbitrary code via crafted serialized data.
Severity
CVSS 3.0
9.8 critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
39% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)