CVE-2025-3627: Moodle: partial data exposure in moodle before completing multi-factor authentication

Severity: medium (CVSS 4.3 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: 2025-04-25 · updated 2026-06-17
Weakness: CWE-287

Description

A security vulnerability was discovered in Moodle that allows some users to access sensitive information about other students before they finish verifying their identities using two-factor authentication (2FA).

Affected products

Moodle: from 4.3.0 before 4.3.12; from 4.4.0 before 4.4.8; from 4.5.0 before 4.5.4 — fixed in 4.3.12, 4.4.8, 4.5.4

How to fix

Upgrade to a fixed version: Moodle 4.3.12, 4.4.8, 4.5.4. Check the vendor advisory for mitigations.

References

https://access.redhat.com/security/cve/CVE-2025-3627
https://bugzilla.redhat.com/show_bug.cgi?id=2359692

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