Home/CVE/In Moodle, in some circumstances, email notifications of messages could have the link back to the original message hidde
CVE

CVE-2021-36403

In Moodle, in some circumstances, email notifications of messages could have the link back to the original message hidde

In Moodle, 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.

MEDIUM · CVSS 5.3 EPSS 0.00297
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-912Hidden Functionality
▤

Affected Products & Versions

3
moodle< 3.9.8
moodle>= 3.10.0 and < 3.10.5
moodle>= 3.11.0 and < 3.11.1
▣

Scoring & Timeline

5.3
MEDIUM · CVSS v3.1 · patrick@puiterwijk.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD06 Mar 2023 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://moodle.org/mod/forum/discuss.php?d=424809PatchVendor Advisory
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