CVE-2026-102585

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.

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-842

Published

2026-09-30

Modified

2026-10-01

Record from

the NVD, synced 2026-10-19

Affected

• moodle:moodle

References

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88538
• https://access.redhat.com/security/cve/CVE-2026-102585
• https://bugzilla.redhat.com/show_bug.cgi?id=2543639
• https://moodle.org/mod/forum/discuss.php?d=482503

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