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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No CVSS v3.1

No CVSS v3.0

No CVSS v2

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Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Apache Software Foundation Apache CXF unaffected
Version Status Constraints
4.2.0 affected < 4.2.3
4.0.0 affected < 4.1.8
0 affected < 3.6.12

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Fixes

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References
Link Providers
https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx cve-icon
History

Thu, 06 Aug 2026 11:15:00 +0000

Type Values Removed Values Added
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.
Title Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
Weaknesses CWE-502
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-08-06T10:23:23.571Z

Reserved: 2026-07-28T09:44:19.058Z

Link: CVE-2026-66909

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

Updated: 2026-08-06T12:30:03Z

Weaknesses