Vulnerability DatabaseCVE-2021-32476
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CVE-2021-32476
Published:March 11, 2022
Updated:May 17, 2026
A denial-of-service risk was identified in the draft files area, due to it not respecting user file upload limits. Moodle versions 3.10 to 3.10.3, 3.9 to 3.9.6, 3.8 to 3.8.8, 3.5 to 3.5.17 and earlier unsupported versions are affected.
Affected Packages
moodle/moodle (PHP):
Affected version(s) >=v3.8.0 <v3.8.9
Fix Suggestion:
Update to version v3.8.9
moodle/moodle (PHP):
Affected version(s) =v3.5.17 <v3.5.18
Fix Suggestion:
Update to version v3.5.18
moodle/moodle (PHP):
Affected version(s) >=v3.9.0 <v3.9.7
Fix Suggestion:
Update to version v3.9.7
moodle/moodle (PHP):
Affected version(s) >=v3.10.0 <v3.10.4
Fix Suggestion:
Update to version v3.10.4
Related Resources (3)
https://github.com/moodle/moodle
https://nvd.nist.gov/vuln/detail/CVE-2021-32476
https://moodle.org/mod/forum/discuss.php?d=422310
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
CWE-770
Uncontrolled Resource Consumption
CWE-400
EPSS
Base Score:
0.67