What is CVE-2026-38429?

CVE-2026-38429 is a critical-severity vulnerability in N/a, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2026-05-05.

How severe is CVE-2026-38429?

Critical severity. CVSS v3 base score is 9.8 out of 10.

XXE in N/a

CVE-2026-38429

OpenCMS v20 and before is vulnerable to XML External Entity (XXE) in the Admin Import DB feature due to insecure XML parsing of user supplied .zip files containing a manifest.xml.

Vulnerability class: XXE (XML External Entity)

EPSS: 0.001 (19.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

N/a — versions n/a

Weakness classification (CWE)

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

References

cve@mitre.org

Frequently asked questions

What is CVE-2026-38429?: CVE-2026-38429 is a critical-severity vulnerability in N/a, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2026-05-05.
How severe is CVE-2026-38429?: Critical severity. CVSS v3 base score is 9.8 out of 10.