CVE-2021-3325: Fedoraproject Fedora

Critical severity, CVSS 9.8. EPSS: 2.2% chance of exploitation in the next 30 days.

Monitorix 3.13.0 allows remote attackers to bypass Basic Authentication in a default installation (i.e., an installation without a hosts_deny option). This issue occurred because a new access-control feature was introduced without considering that some exiting installations became unsafe, upon an update to 3.13.0, unless the new feature was immediately configured.

Affected products

• Fedoraproject Fedora: version 32 only; version 33 only
• Fibranet Monitorix: version 3.13.0 only

Published 2021-01-27. Last modified 2026-06-17.