Bug 2511983 (CVE-2026-66909) - CVE-2026-66909 org.apache.cxf/cxf: Apache CXF: Remote Code Execution via unsafe deserialization of JMS ObjectMessage
Summary: CVE-2026-66909 org.apache.cxf/cxf: Apache CXF: Remote Code Execution via unsa...
Keywords:
Status: NEW
Alias: CVE-2026-66909
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-06 11:11 UTC by OSIDB Bzimport
Modified: 2026-08-14 03:08 UTC (History)
42 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-08-06 11:11:31 UTC 
Apache CXF's JMS transport deserializes the body of any inbound JMS ObjectMessage using native Java deserialization, with no type restrictions in place. Any attacker able to place a message on the service's JMS destination can submit a malicious serialized object, leading to denial of service or, if a suitable gadget class is on the classpath, remote code execution. The fix disables ObjectMessage deserialization by default, with a configuration switch to re-enable it if needed. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
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