CVE-2026-38429

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Published 2026-05-05. Last modified 2026-07-24.