CVE-2026-50645

HIGH

Apache CXF: No restriction on attachment headers per message

Title source: cna

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 (2)

Core 2

Core References

Mailing List

http://www.openwall.com/lists/oss-security/2026/06/11/12

Vendor Advisory vendor-advisory

https://lists.apache.org/thread/24zb7cqcvykhwm0j797dmdq25s61mj93

Scores

CVSS v3 7.5

EPSS 0.0062

EPSS Percentile 44.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (3)

apache/cxf < 4.1.7

Apache Software Foundation/Apache CXF < 4.1.7

Apache Software Foundation/Apache CXF 4.2.0 - 4.2.2

Published Jun 12, 2026

Tracked Since Jun 12, 2026