What is CVE-2025-66370?

CVE-2025-66370 is a medium-severity vulnerability in Kivitendo, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.0/10. Published 2025-11-28.

How severe is CVE-2025-66370?

Medium severity. CVSS v3 base score is 5.0 out of 10.

XXE in Kivitendo

CVE-2025-66370

Kivitendo before 3.9.2 allows XXE injection. By uploading an electronic invoice in the ZUGFeRD format, it is possible to read and exfiltrate files from the server's filesystem.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.003 (24.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.

Affected products

Kivitendo — versions 0

Weakness classification (CWE)

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

References

cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org
cve@mitre.org

Frequently asked questions

What is CVE-2025-66370?: CVE-2025-66370 is a medium-severity vulnerability in Kivitendo, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.0/10. Published 2025-11-28.
How severe is CVE-2025-66370?: Medium severity. CVSS v3 base score is 5.0 out of 10.