Description
There is no restriction on the amount of attachment headers that a message can contain when being deserialized by Apache CXF, which can lead to uncontrolled resource consumption or a denial of service attack. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fix this issue by imposing a maximum default of 500 attachments per message.
Problem types
CWE-400 Uncontrolled Resource Consumption
Product status
4.2.0 (semver) before 4.2.2
Any version before 4.1.7
References
www.openwall.com/lists/oss-security/2026/06/11/12
lists.apache.org/thread/24zb7cqcvykhwm0j797dmdq25s61mj93