CVE-2026-66909

Description

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.

CVSS Vector

Affected Products

References

• https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx
• http://www.openwall.com/lists/oss-security/2026/08/06/18