CVE-2024-34009: Moodle ReCAPTCHA Bypass on Login Page

moodle/moodle Updated 02 Oct 2025

Summary

31/05/2024
Yes i
High
7.5

CVE-2024-34009: Moodle ReCAPTCHA can be bypassed on the login page. Affects moodle/moodle versions >= 4.3.0, < 4.3.4. Fixed in 4.3.4. How to fix ↓

Also tracked for

The same CVE-2024-34009 is tracked separately for each ecosystem and vendor. Its fix information is the same; the package and affected versions differ.

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Background

Moodle is an open-source learning management system (LMS) used by educational institutions to create and manage online courses. It provides a range of features for course administration, content creation, and student engagement. The Moodle package, available on Packagist, is a popular choice for setting up LMS platforms. However, a vulnerability has been identified in the ReCAPTCHA implementation on the login page of Moodle.

Vulnerability Detail

The vulnerability in Moodle ReCAPTCHA allows for bypassing the checks on the login page. Insufficient checks were performed to verify whether ReCAPTCHA was enabled, enabling attackers to bypass the protection mechanism. This vulnerability only affects the login page and does not impact other pages where ReCAPTCHA is utilized. Exploiting this vulnerability could potentially allow unauthorized access to Moodle accounts.

How To Fix

Minimum fixed version

4.3.4

This is the first release that contains the fix.

composer require moodle/moodle:4.3.4

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Workaround

There is no specific workaround provided for this vulnerability. It is advised to apply the fix by updating the Moodle package to the latest version.

Conclusion

The vulnerability in Moodle ReCAPTCHA on the login page can be bypassed, potentially leading to unauthorized access to Moodle accounts. It is crucial to update the Moodle package to version 4.3.4 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

Moodle is an open-source learning management system used for creating and managing online courses.

ReCAPTCHA is a security measure used to verify that a user is human and not a bot.

Moodle version 4.3.0 is affected by this vulnerability.

No, this vulnerability only affects the login page where ReCAPTCHA is implemented.

Exploiting this vulnerability could allow unauthorized access to Moodle accounts.

Related vulnerabilities

Recent vulnerabilities recorded for moodle/moodle.

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How To Fix

Minimum fixed version

4.3.4

This is the first release that contains the fix.

composer require moodle/moodle:4.3.4

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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