CVE-2013-1834: Moodle allows remote authenticated users to reassign notes

moodle/moodle Updated 02 Oct 2025

Summary

13/05/2022

Disclosed on

CVE-2013-1834

CVE

Yes i

Fix available

Moderate

Severity

Not published

CVSS Score

CVE-2013-1834: Moodle allows remote authenticated users to reassign notes. Affects moodle/moodle across 3 version ranges.

>= 1.9.0, < 2.2.8 >= 2.3.0, < 2.3.5 >= 2.4.0, < 2.4.2

Fixed in 2.2.8, 2.3.5 or 2.4.2, depending on the release line you run. How to fix ↓

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Background

Moodle is an open-source learning management system (LMS) used by educational institutions to create and deliver online courses. It provides a platform for teachers and students to interact, share resources, and participate in various learning activities. Moodle is widely adopted and offers a range of features to support online education.

Vulnerability Detail

The vulnerability identified as CVE-2013-1834 affects Moodle versions 1.9.x through 1.9.19, 2.x through 2.1.10, 2.2.x before 2.2.8, 2.3.x before 2.3.5, and 2.4.x before 2.4.2. It allows remote authenticated users to reassign notes by manipulating the 'userid' or 'courseid' fields. This means that an authenticated user can modify the notes assigned to other users or courses, potentially leading to unauthorized access or data manipulation.

How To Fix

Fixed versions by release line

The minimum fixed version depends on the release line you run.

>= 1.9.0, < 2.2.8 2.2.8
```
composer require moodle/moodle:2.2.8
```
>= 2.3.0, < 2.3.5 2.3.5
```
composer require moodle/moodle:2.3.5
```
>= 2.4.0, < 2.4.2 2.4.2
```
composer require moodle/moodle:2.4.2
```

Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →

Workaround

As a workaround, users can implement access controls and permissions to restrict note assignment and modification privileges. This can be done by configuring user roles and permissions within the Moodle system. By carefully assigning roles and permissions, administrators can limit the ability to reassign notes to trusted individuals or specific user groups.

Conclusion

The vulnerability in Moodle that allows remote authenticated users to reassign notes can be mitigated by upgrading to the latest version of the software. Additionally, implementing access controls and permissions can provide an extra layer of security. For further assistance and support in addressing this vulnerability, please contact DevNack.com.

See every vulnerability recorded for moodle/moodle →