CVE-2021-43558
Cross-site Scripting in moodle
6.1
MEDIUM
CVSS 3.1
EPSS 0.16%
Description
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. A URL parameter in the filetype site administrator tool required extra sanitizing to prevent a reflected XSS risk.
How to fix CVE-2021-43558
To remediate CVE-2021-43558, upgrade the affected package to a fixed version below.
- Bitnami/moodle—upgrade to 3.8.9 or later
- —upgrade to 3.11.4 or later
Is CVE-2021-43558 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 3.8.9, >= 3.9.0, < 3.9.11, >= 3.10.0, < 3.10.8, >= 3.11.0, < 3.11.4
- >= 3.11.0, < 3.11.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |