Home/CVE/In Moodle, ID numbers exported in HTML data formats required additional sanitizing to prevent a local stored XSS risk.
CVE

CVE-2021-36401

In Moodle, ID numbers exported in HTML data formats required additional sanitizing to prevent a local stored XSS risk.

In Moodle, ID numbers exported in HTML data formats required additional sanitizing to prevent a local stored XSS risk.

MEDIUM · CVSS 4.8 EPSS 0.00265
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

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

4.8
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 · 10:15 PM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
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=424807PatchVendor Advisory
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