Medium severity · published Oct 23, 2025
CVE-2025-62400
Moodle: hidden group names visible to event creators
6.5
CVSS
0.3%
EPSS
No
On KEV
Description
Moodle exposed the names of hidden groups to users who had permission to create calendar events but not to view hidden groups. This could reveal private or restricted group information.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Moodle · Moodle
4.1.0 before 4.1.21; 4.4.0 before 4.4.11; 4.5.0 before 4.5.7; 5.0.0 before 5.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-62400
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-62400
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-62400
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2404433
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