CVE-2021-20186
MEDIUM
5.4
CVSS Score
Published: January 28, 2021 at 06:38 PM UTC
Updated: June 17, 2026 at 03:33 AM UTC
1 product affected across 1 vendorMoodle
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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.8%
Description
It was found in Moodle before version 3.10.1, 3.9.4, 3.8.7 and 3.5.16 that if the TeX notation filter was enabled, additional sanitizing of TeX content was required to prevent the risk of stored XSS.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 3.10.1, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.5.16, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.8.7, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.9.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://moodle.org/mod/forum/discuss.php?d=417170CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-79
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