CVE-2026-44618: Apache CXF: XXE vulnerability in WS-Transfer functionality

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-22 · updated 2026-07-23
Weakness: CWE-611

Description

Insecure XML parser configuration in Apache CXF's WS-Transfer module may allow attackers to perform XXE attacks. Users are recommended to upgrade to versions 4.2.1, 4.1.6 or 3.6.11, which fix this issue.

Affected products

Apache Software Foundation Apache CXF: before 3.6.11; from 4.0.0 before 4.1.6; 4.2.0 — fixed in 3.6.11, 4.1.6

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache CXF 3.6.11, 4.1.6. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/c7vb015f8ljmjl44030mn0yfq71f7sd7
http://www.openwall.com/lists/oss-security/2026/05/22/8

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