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CVE

CVE-2026-66909

Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage
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CVE

CVE-2026-66909

Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

http://www.openwall.com/lists/oss-security/2026/08/06/18, https://repo.maven.apache.org/maven2, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66909.json, https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx, https://nvd.nist.gov/vuln/detail/CVE-2026-66909

Severity

9.8

CVSS Score
0
10

Basic Information

Base CVSS
9.8
EPSS Probability
0.00667%
EPSS Percentile
0.49207%
Introduced Version
04ccbfd709eef8f4af53d6237514fbe9db7ea81f
Fix Available
33259395b45b4ff69b8df6a153630721fdd489fa

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