---
id: CVE-2026-102580
title: A flaw was found in Moodle
summary: >-
  A flaw was found in Moodle. An authenticated attacker can supply an improperly
  validated audience class name to the Report Builder component, allowing
  arbitrary class instantiation. This vulnerability enables the unauthorized
  creation of…
severity: low
cvss: 2.2
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-470
product: moodle
affected:
  - moodle >= 5.2.0 < 5.2.2
  - moodle >= 5.1.0 < 5.1.6
  - moodle >= 5.0.0 < 5.0.9
  - moodle < 4.5.13
published: '2026-09-30'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T09:17:15.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102580'
references:
  - url: >-
      http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-89078
    label: patrick@puiterwijk.org
  - url: 'https://access.redhat.com/security/cve/CVE-2026-102580'
    label: patrick@puiterwijk.org
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2543635'
    label: patrick@puiterwijk.org
  - url: 'https://moodle.org/mod/forum/discuss.php?d=482498'
    label: patrick@puiterwijk.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-30T09:00:29.907Z'
---

## Overview

A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.