Medium severity · published May 22, 2026
CVE-2026-44618
Apache CXF: XXE vulnerability in WS-Transfer functionality
5.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache CXF · Apache Software Foundation
4.2.0 before 4.2.1; 4.0.0 before 4.1.6; before 3.6.11 · source: vendor
CX
Cxf · Apache
before 3.6.11; 4.0.0 before 4.1.6; 4.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44618
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44618
Mailing List
https://lists.apache.org/thread/c7vb015f8ljmjl44030mn0yfq71f7sd7
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/05/22/8
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