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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/08/06/18

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:cxf::::::::
	cpe:2.3:a:apache:cxf::::::::
	cpe:2.3:a:apache:cxf::::::::

History

No history.

Information

Published : 2026-08-06 11:16

Updated : 2026-08-07 00:16

NVD link : CVE-2026-66909

Mitre link : CVE-2026-66909

CVE.ORG link : CVE-2026-66909

JSON object : View

Products Affected

apache

cxf

CWE

CWE-502

Deserialization of Untrusted Data

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