CVE-2021-20185

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CVSS 3.1

5.3 medium

EPSS

1%p70

Published

Jan 28, 2021 (Jan 28, 2021)

Modified

Jun 17, 2026

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.

Vendors: moodle
Products: moodle
Weakness: CWE-400, CWE-770
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

NVD CVE.org GitHub PoCs EPSS (1.4%)

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