Moodle Hidden Group Info Disclosure via Calendar Event Permissions
CVE-2025-62400 Published on October 23, 2025
Moodle: hidden group names visible to event creators
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 Analysis
CVE-2025-62400 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2025-62400 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2025-62400
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.