What’s Vulnerable › Vulnerabilities

CVE-2025-62397: Moodle: router produces json instead of 404 error for invalid course id

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-23 · updated 2026-06-17
• Weakness: CWE-209

Description

The router’s inconsistent response to invalid course IDs allowed attackers to infer which course IDs exist, potentially aiding reconnaissance.

Affected products

• Moodle: from 5.0.0 before 5.0.3 — fixed in 5.0.3

How to fix

Upgrade to a fixed version: Moodle 5.0.3. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2025-62397
• https://bugzilla.redhat.com/show_bug.cgi?id=2404430

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