CVE-2025-62397 Moodle: router produces json instead of 404 error for invalid course id
Attackers can enumerate valid course IDs by observing JSON responses instead of 404 errors, facilitating reconnaissance against Moodle installations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-62397?
CVE-2025-62397 is a medium-severity vulnerability in Moodle Moodle, published on 23 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The router’s inconsistent response to invalid course IDs allowed attackers to infer which course IDs exist, potentially aiding reconnaissance.
Weakness: CWE-209
Which versions are affected by CVE-2025-62397?
1 open source package ship an affected version, including moodle. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
moodle Bitnami | From 5.0.0 | 5.0.3 |
Products include Moodle Moodle.
How do I fix CVE-2025-62397?
Upgrade moodle to 5.0.3 or later.
Is CVE-2025-62397 being exploited?
There is no known exploitation of CVE-2025-62397 in the wild and no public exploit code.
Other vulnerabilities in Moodle Moodle
- CVE-2006-4935 File upload in n/a
- CVE-2006-4936 Moodle does not properly validate module instance id
- CVE-2004-2233 Unknown "front page vulnerability with Moodle servers" for Moodle before 1.3.2 has unknown impact and attack vectors.
- CVE-2004-2235 Cross-site scripting in n/a
- CVE-2004-2236 Other in n/a
Sources
Also known as BIT-moodle-2025-62397, GHSA-rc65-mhj4-hp4r, UBUNTU-CVE-2025-62397.