PT-2021-3693 · Moodle+1 · Moodle+1

I_Am_Nobody · Published 2021-07-13 · Updated 2025-03-07 · CVE-2021-36403

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Moodle (affected versions not specified)

Description The issue is related to insufficient input validation in Moodle, which may allow a remote attacker to obtain confidential information. In some circumstances, email notifications of messages could have the link back to the original message hidden by HTML, posing a phishing risk.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Hidden Functionality

Weakness Enumeration

CWE-20

CWE-912

Related Identifiers

ALT-PU-2021-2215

ALT-PU-2022-1641

BDU:2021-03926

BIT-MOODLE-2021-36403

CVE-2021-36403

GHSA-J9CW-5CPJ-9QJ5

Affected Products

Alt Linux

Moodle

References · 16

• https://cve.org/CVERecord?id=CVE-2021-36403 · Security Note
• https://osv.dev/vulnerability/BIT-moodle-2021-36403 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-36403 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-36403 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-36403 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-36403 · Security Note
• https://osv.dev/vulnerability/GHSA-j9cw-5cpj-9qj5 · Vendor Advisory
• https://moodle.org/mod/forum/discuss.php?d=424809 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03926 · Security Note
• https://github.com/moodle/moodle · Note
• https://t.me/cvenotify/113886 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021071911 · Note
• https://t.me/cibsecurity/59530 · Telegram Post
• https://redos.red-soft.ru/updatesec · Note
• https://t.me/cvenotify/45676 · Telegram Post