CVE-2020-28246: Form Form.io

Critical severity, CVSS 9.8. EPSS: 2.3% chance of exploitation in the next 30 days.

A Server-Side Template Injection (SSTI) was discovered in Form.io 2.0.0. This leads to Remote Code Execution during deletion of the default Email template URL. NOTE: the email templating service was removed after 2020. Additionally, the vendor disputes this issue indicating this is sandboxed and only executable by admins.

Affected products

• Form Form.io: version 2.0.0 only

Published 2022-06-02. Last modified 2026-06-17.