CVE-2020-25630
Published:December 08, 2020
Updated:May 17, 2026
A vulnerability was found in Moodle where the decompressed size of zip files was not checked against available user quota before unzipping them, which could lead to a denial of service risk. This affects versions 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. Fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.
Affected Packages
moodle/moodle (PHP):
Affected version(s) >=v3.7.0 <v3.7.8Fix Suggestion:
Update to version v3.7.8moodle/moodle (PHP):
Affected version(s) >=v3.5.0 <v3.5.14Fix Suggestion:
Update to version v3.5.14moodle/moodle (PHP):
Affected version(s) >=v3.8.0 <v3.8.5Fix Suggestion:
Update to version v3.8.5moodle/moodle (PHP):
Affected version(s) >=v3.9.0 <v3.9.2Fix Suggestion:
Update to version v3.9.2Related Resources (3)
Do you need more information?
Contact UsCVSS 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)
Uncontrolled Resource Consumption
EPSS
Base Score:
0.50