CVE-2026-64958

Apache CXF: Denial of service via message header attachments

State: Published
Severity: 7.5 High
Published: Aug 6, 2026
Updated: Aug 6, 2026
Reserved: Jul 21, 2026

Description

An incomplete fix for CVE-2026-50645 means that it is still possible to perform a denial of service attack on Apache CXF by sending a message with many attachment headers. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	CISA-ADP

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
Apache CXFApache Software Foundation	4.2.0 to before 4.2.3Affected 4.0.0 to before 4.1.8Affected before 3.6.12Affected

References

https://lists.apache.org/thread/trsnkxc2f21585zlt819blvchgl6oykbvendor-advisory

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