Medium severity · published Apr 25, 2025
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
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Moodle · Moodle
4.3.0 before 4.3.12; 4.4.0 before 4.4.8; 4.5.0 before 4.5.4 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-3634
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-3634
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2025-3634
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2359707
More from Moodle
10.0
CVE-2019-3809
A flaw was found in Moodle versions 3.1 to 3.1.15 and earlier unsupported versions
9.8
CVE-2025-67856
Moodle: moodle: privilege escalation via incomplete role checks in badge awarding
9.8
CVE-2025-26533
An SQL injection risk was identified in the module list filter within course search
9.8
CVE-2024-33999
The referrer URL used by MFA required additional sanitizing, rather than being used directly
9.8
CVE-2023-5550
In a shared hosting environment that has been misconfigured to allow access to other users' content, a Moodle user who also has direct access to the web server outside of the…