CVE-2021-3943
Moodle vulnerable to RCE via unsafe deserialization
9.8
CRITICAL
CVSS 3.1
EPSS 1.2%
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 remote code execution risk when restoring backup files was identified.
How to fix CVE-2021-3943
To remediate CVE-2021-3943, upgrade the affected package to a fixed version below.
- Bitnami/moodle—upgrade to 3.9.11 or later
- —upgrade to 3.11.4 or later
Is CVE-2021-3943 being exploited?
Low — EPSS is 1.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- >= 3.9.0, < 3.9.11, >= 3.10.0, < 3.10.8, >= 3.11.0, < 3.11.4
- >= 3.11, < 3.11.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |