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.
How to fix
- apache cxf3.6.12, 4.1.8, 4.2.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache cxf | v < 3.6.12, 4.0.0 ≤ v < 4.1.8, 4.2.0 ≤ v < 4.2.3 | 3.6.12, 4.1.8, 4.2.3 |
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