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Posted to announce@apache.org by Colm O hEigeartaigh <co...@apache.org> on 2026/06/11 17:08:25 UTC

CVE-2026-50645: Apache CXF: No restriction on attachment headers per message

Severity: low 

Affected versions:

- Apache CXF (org.apache.cxf:cxf-core) 4.2.0 before 4.2.2
- Apache CXF (org.apache.cxf:cxf-core) before 4.1.7

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.

References:

https://cxf.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-50645