CVE-2026-66909
Published:August 06, 2026
Updated:September 01, 2026
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.
Affected Packages
org.apache.cxf:cxf-rt-transports-jms (JAVA):
Affected version(s) >=4.0.0 <4.1.8Fix Suggestion:
Update to version 4.1.8org.apache.cxf:cxf-rt-transports-jms (JAVA):
Affected version(s) >=4.2.0 <4.2.3Fix Suggestion:
Update to version 4.2.3org.apache.cxf:cxf-rt-transports-jms (JAVA):
Affected version(s) >=2.0.4-incubator <3.6.12Fix Suggestion:
Update to version 3.6.12Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Deserialization of Untrusted Data
EPSS
Base Score:
0.67