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.

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)

EPSS: 0.002 (37.5th percentile) — read the EPSS interpretation.

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.

Affected products

Apache Cxf — versions 4.2.0
Apache Software Foundation Cxf — versions 4.2.0, 4.0.0, 0

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

security@apache.org (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.