Bug 2543639 (CVE-2026-102585)

Summary: CVE-2026-102585 moodle: Group validation missing when enrolling user to course
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Moodle. When enrolling a user into a course while assigning them to a group, the application does not verify whether the selected group actually belongs to that course. An authenticated user with teacher privileges could exploit this flaw to add users to groups within courses they do not have authorization to access.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2543842    
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Description OSIDB Bzimport 2026-09-29 20:37:17 UTC
A flaw was found in Moodle. When enrolling a user into a course while selecting a group, a check that the selected group actually belonged to that course was missing, allowing a teacher to add users to groups in courses the teacher could not otherwise access.