CVE-2026-66909

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.

Score
CVSS 3.1 9.8 Critical
Status
Modified - security@apache.org
Published
2026-08-06
Last modified
2026-10-24
Weaknesses
CWE-502

Affected products

References

 
 
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