CVE-2025-3634: moodle Auth Bypass (CVSS 4.3)

Description

A security vulnerability was discovered in Moodle that allows students to enroll themselves in courses without completing all the necessary safety checks. Specifically, users can sign up for courses prematurely, even if they haven't finished two-step verification processes.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness Type (CWE)

CWE-287 Improper Authentication

Affected Products

Vendor	Product	Versions
moodle	moodle	4.3.0 — 4.3.12
moodle	moodle	4.4.0 — 4.4.8
moodle	moodle	4.5.0 — 4.5.4

References

Other References

https://access.redhat.com/security/cve/CVE-2025-3634 https://bugzilla.redhat.com/show_bug.cgi?id=2359707

Frequently Asked Questions

What is CVE-2025-3634? +

A security vulnerability was discovered in Moodle that allows students to enroll themselves in courses without completing all the necessary safety checks. Specifically, users can sign up for courses prematurely, even if they haven't finished two-step verification processes. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-3634? +

CVE-2025-3634 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-3634? +

CVE-2025-3634 affects products from moodle, specifically: moodle. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-3634? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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