What’s Vulnerable › Vulnerabilities
CVE-2020-1755
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-08-16 · updated 2026-06-17
- Weakness: CWE-345
Description
In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.
Affected products
- Moodle: from 3.5.0 before 3.5.11; from 3.6.0 before 3.6.9; from 3.7.0 before 3.7.5; from 3.8.0 before 3.8.2 — fixed in 3.5.11, 3.6.9, 3.7.5, 3.8.2
How to fix
Upgrade to a fixed version: Moodle 3.5.11, 3.6.9, 3.7.5, 3.8.2. Check the vendor advisory for mitigations.
References
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