Bug 2404433 (CVE-2025-62400)

Summary:	CVE-2025-62400 moodle: Hidden group names visible to event creators
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	---
Doc Text:	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.	Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2404450, 2404449
Bug Blocks:

Description OSIDB Bzimport 2025-10-16 14:45:45 UTC

A missing capability check in the calendar event creation flow allows users with event creation rights to see names of hidden or separate groups. This may expose group names meant to remain private within a course.

Versions affected: 5.0 to 5.0.2, 4.5 to 4.5.6, 4.4 to 4.4.10, 4.1 to 4.1.20
and earlier unsupported versions
Versions fixed: 5.0.3, 4.5.7, 4.4.11 and 4.1.21