What is CVE-2025-62400?

CVE-2025-62400 is a medium-severity vulnerability in Moodle, classified under Information Disclosure. CVSS score: 4.3/10. Published 2025-10-23.

How severe is CVE-2025-62400?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Information disclosure in Moodle

CVE-2025-62400

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.

Vulnerability class: Information Disclosure

Published 2025-10-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (17.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 17.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Moodle

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

access.redhat.com/security/cve/CVE-2025-62400 (Third Party Advisory, vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2025-62400?: CVE-2025-62400 is a medium-severity vulnerability in Moodle, classified under Information Disclosure. CVSS score: 4.3/10. Published 2025-10-23.
How severe is CVE-2025-62400?: Medium severity. CVSS v3 base score is 4.3 out of 10.