CVE-2014-0124: Moodle allows attackers to obtain sensitive information

moodle/moodle Updated 02 Oct 2025

Summary

13/05/2022

Disclosed on

CVE-2014-0124

CVE

Yes i

Fix available

Moderate

Severity

Not published

CVSS Score

CVE-2014-0124: Moodle allows attackers to obtain sensitive information. Affects moodle/moodle across 3 version ranges.

< 2.4.9 >= 2.5.0, < 2.5.5 >= 2.6.0, < 2.6.2

Fixed in 2.4.9, 2.5.5 or 2.6.2, 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 for creating and delivering online courses. It provides a platform for educators to create interactive and collaborative learning environments. Moodle is widely adopted in educational institutions and organizations worldwide. The vulnerability described in this report affects Moodle versions 2.3.11, 2.4.x before 2.4.9, 2.5.x before 2.5.5, and 2.6.x before 2.6.2.

Vulnerability Detail

The vulnerability exists in the identity-reporting implementations of the Forum and Quiz modules in Moodle. Specifically, the mod/forum/renderer.php and mod/quiz/override_form.php files are affected. These implementations fail to properly restrict the display of email addresses, allowing remote authenticated users to obtain sensitive information. By exploiting this vulnerability, an attacker can retrieve email addresses of other users, potentially leading to further attacks such as phishing or identity theft.

How To Fix

Fixed versions by release line

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

< 2.4.9 2.4.9
```
composer require moodle/moodle:2.4.9
```
>= 2.5.0, < 2.5.5 2.5.5
```
composer require moodle/moodle:2.5.5
```
>= 2.6.0, < 2.6.2 2.6.2
```
composer require moodle/moodle:2.6.2
```

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

Workaround

If immediate upgrading is not possible, a temporary workaround can be implemented by modifying the affected files (mod/forum/renderer.php and mod/quiz/override_form.php) to enforce proper restrictions on the display of email addresses. The following code snippet can be used as a reference:

// Apply proper email address display restrictions
if (has_capability('moodle/user:viewdetails', $context, $user->id)) {
    echo format_string($user->email);
}

Please note that this workaround is not a permanent solution and should be replaced with the official patch as soon as possible.

Conclusion

The identified vulnerability in Moodle allows attackers to obtain sensitive information, specifically email addresses of other users. To mitigate this vulnerability, it is crucial to update Moodle to the latest patched version (2.4.9, 2.5.5, or 2.6.2). If immediate upgrading is not possible, a temporary workaround can be implemented. For further assistance and support in vulnerability remediation, please contact DevNack.com.

See every vulnerability recorded for moodle/moodle →

FAQ

What is Moodle?

Which versions of Moodle are affected by this vulnerability?

The vulnerability affects Moodle versions 2.3.11, 2.4.x before 2.4.9, 2.5.x before 2.5.5, and 2.6.x before 2.6.2.

What is the impact of this vulnerability?

The vulnerability allows remote authenticated users to obtain sensitive information, specifically email addresses of other users. This information can be exploited for further attacks such as phishing or identity theft.

How can I fix this vulnerability?

To fix this vulnerability, it is recommended to update Moodle to version 2.4.9, 2.5.5, or 2.6.2, depending on the installed version. Upgrading to the latest patched version will ensure that the vulnerability is mitigated.

Is there a workaround available?

Yes, if immediate upgrading is not possible, a temporary workaround can be implemented by modifying the affected files (mod/forum/renderer.php and mod/quiz/override_form.php) to enforce proper restrictions on the display of email addresses. However, this workaround should be replaced with the official patch as soon as possible.