CVE-2020-25629

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-08 · updated 2026-06-17
Weakness: CWE-284

Description

A vulnerability was found in Moodle where users with "Log in as" capability in a course context (typically, course managers) may gain access to some site administration capabilities by "logging in as" a System manager. This affects 3.9 to 3.9.1, 3.8 to 3.8.4, 3.7 to 3.7.7, 3.5 to 3.5.13 and earlier unsupported versions. This is fixed in 3.9.2, 3.8.5, 3.7.8 and 3.5.14.

Affected products

Moodle: from 3.5.0 before 3.5.14; from 3.7.0 before 3.7.8; from 3.8.0 before 3.8.5; from 3.9.0 before 3.9.2 — fixed in 3.5.14, 3.7.8, 3.8.5, 3.9.2

How to fix

Upgrade to a fixed version: Moodle 3.5.14, 3.7.8, 3.8.5, 3.9.2. Check the vendor advisory for mitigations.

References

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