VULNERABILITY INTELLIGENCE

CVE-2021-20185

CVSS score5.3 MEDIUM

EPSS probability1.39%

CISA KEVNot currently listed

Published2021-01-28

Last modified2026-06-17

Description

It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that messaging did not impose a character limit when sending messages, which could result in client-side (browser) denial of service for users receiving very large messages.