Rapid7

vulnerability

Moodle: Improper Neutralization of Special Elements used in an OS Command (CVE-2021-21809)

Severity
9
CVSS
(AV:N/AC:L/Au:S/C:C/I:C/A:C)
Published
Jun 23, 2021
Added
Jul 8, 2021
Modified
May 7, 2026

Description

A command execution vulnerability exists in the default legacy spellchecker plugin in Moodle 3.10. A specially crafted series of HTTP requests can lead to command execution. An attacker must have administrator privileges to exploit this vulnerabilities.

Solution

moodle-upgrade-latest
Title
Rapid7 Labs

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