Vulnerability Details : CVE-2021-36401
In Moodle, ID numbers exported in HTML data formats required additional sanitizing to prevent a local stored XSS risk.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2021-36401
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
- cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-36401
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 13 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-36401
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.8
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
1.7
|
2.7
|
NIST |
CWE ids for CVE-2021-36401
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by:
- nvd@nist.gov (Primary)
- patrick@puiterwijk.org (Secondary)
References for CVE-2021-36401
-
https://moodle.org/mod/forum/discuss.php?d=424807
Moodle.org: MSA-21-0029: Stored XSS when exporting to data formats supporting HTML via user ID numberPatch;Vendor Advisory
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