CVE-2021-20280
Cross-site scripting (XSS) and Server side request forgery (SSRF) in moodle
5.4
MEDIUM
CVSS 3.1
EPSS 0.88%
Description
Text-based feedback answers required additional sanitizing to prevent stored XSS and blind SSRF risks in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.
How to fix CVE-2021-20280
To remediate CVE-2021-20280, upgrade the affected package to a fixed version below.
- Bitnami/moodle—upgrade to 3.5.17 or later
- —upgrade to 3.10.2 or later
Is CVE-2021-20280 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 3.5.0, < 3.5.17, >= 3.8.0, < 3.8.8, >= 3.9.0, < 3.9.5, >= 3.10.0, < 3.10.2
- >= 3.10, < 3.10.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |