---
id: CVE-2026-119555
title: >-
  Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15 Information Disclosure
  via core_grades_get_feedback
summary: >-
  Moodle 4.2.0 through 4.5.15, 5.0.0 through 5.0.11, 5.1.0 through 5.1.8, 5.2.0
  through 5.2.4, and 5.3.0 contain an information disclosure vulnerability in
  the core_grades_get_feedback web service. The service lacks group-membership
  and en…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-639
vendor: Moodle Project
product: moodle
affected:
  - moodle 5.3.0
  - moodle >= 5.2.0 <= 5.2.4
  - moodle >= 5.1.0 <= 5.1.8
  - moodle >= 5.0.0 <= 5.0.11
  - moodle >= 4.2.0 <= 4.5.15
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T11:31:05.504Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119555'
references:
  - url: >-
      https://github.com/moodle/moodle/blob/v5.3.0/public/grade/classes/external/get_feedback.php#L77-L96
  - url: 'https://abraxaslabs.tech/research/moodle-grades-feedback-idor'
  - url: 'https://github.com/moodle/moodle'
  - url: >-
      https://www.vulncheck.com/advisories/moodle-through-5.3.0-5.2.4-5.1.8-5.0.11-and-4.5.15-information-disclosure-via-core-grades-get-feedback
    label: >-
      VulnCheck Advisory: Moodle through 5.3.0, 5.2.4, 5.1.8, 5.0.11 and 4.5.15
      Information Disclosure via core_grades_get_feedback
tags:
  - cve.org
epss: 0.00217
epssPercentile: 0.12166
ingestedAt: '2026-11-03T11:43:15.772Z'
---

## Overview

Moodle 4.2.0 through 4.5.15, 5.0.0 through 5.0.11, 5.1.0 through 5.1.8, 5.2.0 through 5.2.4, and 5.3.0 contain an information disclosure vulnerability in the core_grades_get_feedback web service. The service lacks group-membership and enrolment checks, so non-editing teachers can iterate userid values to read other groups' grade feedback and users' names and identity fields such as email.

## Affected

- `moodle 5.3.0`
- `moodle >= 5.2.0 <= 5.2.4`
- `moodle >= 5.1.0 <= 5.1.8`
- `moodle >= 5.0.0 <= 5.0.11`
- `moodle >= 4.2.0 <= 4.5.15`

## Remediation

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