CVE-2026-66909

EUVD-2026-53854

06.08.2026, 11:16

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: Unknown

Affected Products (NVD)

Vendor	Product	Version
apache	cxf	𝑥 < 3.6.12
apache	cxf	4.0.0 ≤ 𝑥 < 4.1.8
apache	cxf	4.2.0 ≤ 𝑥 < 4.2.3

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-502 - Deserialization of Untrusted Data
The application deserializes untrusted data without sufficiently verifying that the resulting data will be valid.

Vulnerability Media Exposure

[GERMAN] Apache CXF: Mehrere Schwachstellen
Ein Angreifer kann mehrere Schwachstellen in Apache CXF ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.
Published: 2026-08-05T22:00:00+00:00

References

https://lists.apache.org/thread/lr5d4tg6tf7j29jmw8wt242oowonjqpx