---
id: CVE-2026-102585
title: A flaw was found in Moodle
summary: >-
  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 co…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-842
vendor: moodle
product: moodle
affected:
  - 'moodle >= 5.1.0, < 5.1.6'
  - 'moodle >= 5.2.0, < 5.2.2'
patched:
  - moodle 5.2.2
published: '2026-09-30'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T14:47:35.113'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102585'
references:
  - url: >-
      http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88538
    label: patrick@puiterwijk.org
  - url: 'https://access.redhat.com/security/cve/CVE-2026-102585'
    label: patrick@puiterwijk.org
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2543639'
    label: patrick@puiterwijk.org
  - url: 'https://moodle.org/mod/forum/discuss.php?d=482503'
    label: patrick@puiterwijk.org
tags:
  - nvd
  - cve.org
epss: 0.00201
epssPercentile: 0.0984
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-30T13:56:55.836555Z'
ingestedAt: '2026-09-30T09:00:29.910Z'
---

## Overview

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.

## Affected

- `moodle >= 5.1.0, < 5.1.6`
- `moodle >= 5.2.0, < 5.2.2`

## Remediation

Upgrade past the affected range:

- `moodle 5.2.2`