#VU54987 Input validation error in Moodle - CVE-2021-36403
Published: July 19, 2021
Vulnerability identifier: #VU54987
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-36403
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Moodle
Moodle
Software vendor:
moodle.org
moodle.org
Description
The vulnerability allows a remote attacker to perform phishing attack.
The vulnerability exists due to insufficient validation of user-supplied input when processing email notifications containing HTML. In some circumstances, email notifications of messages could have the link back to the original message hidden by HTML, which may pose a phishing risk.
Remediation
Install updates from vendor's website.