XXE in Apache Cxf
CVE-2026-44618
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.
Vulnerability class: XXE (XML External Entity)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (43.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Apache Cxf — versions 4.2.0
- Apache Software Foundation Cxf — versions 4.2.0, 4.0.0, 0
Weakness classification (CWE)
References
- lists.apache.org/thread/c7vb015f8ljmjl44030mn0yfq71f7sd7 (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-44618?
- CVE-2026-44618 is a medium-severity vulnerability in Apache Cxf, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.3/10. Published 2026-05-22.
- How severe is CVE-2026-44618?
- Medium severity. CVSS v3 base score is 5.3 out of 10.