CVE-2021-3943
Published:November 22, 2021
Updated:May 17, 2026
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.
Affected Packages
moodle/moodle (PHP):
Affected version(s) >=v3.11.0 <v3.11.4Fix Suggestion:
Update to version v3.11.4moodle/moodle (PHP):
Affected version(s) >=v3.9.0 <v3.9.11Fix Suggestion:
Update to version v3.9.11moodle/moodle (PHP):
Affected version(s) >=v3.10.0 <v3.10.8Fix Suggestion:
Update to version v3.10.8Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Input Validation
EPSS
Base Score:
1.19