CVE-2020-11476: Concretecms Concrete CMS

High severity, CVSS 7.2. EPSS: 2.9% chance of exploitation in the next 30 days.

Concrete5 before 8.5.3 allows Unrestricted Upload of File with Dangerous Type such as a .phar file.

Affected products

• Concretecms Concrete CMS: before 8.5.3 (fixed in 8.5.3)

Published 2020-07-28. Last modified 2026-06-17.