What’s Vulnerable › Vulnerabilities

CVE-2021-3325

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-01-27 · updated 2026-06-17

Description

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: 32, 33
• Fibranet Monitorix: 3.13.0

References

• https://github.com/mikaku/Monitorix/commit/d6816e20da1a98bcdc6372d9c36a093df5238f4a
• https://github.com/mikaku/Monitorix/compare/v3.13.0...v3.13.1
• https://github.com/mikaku/Monitorix/issues/309
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67DDUU56LP76AJ2K7WJ733QPL2FHKKNG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGG6WK44CYY6GEFRTCUEDANVNSX5NDH7/
• https://www.monitorix.org/news.html?n=20210127
• https://github.com/mikaku/Monitorix/commit/d6816e20da1a98bcdc6372d9c36a093df5238f4a
• https://github.com/mikaku/Monitorix/compare/v3.13.0...v3.13.1
• https://github.com/mikaku/Monitorix/issues/309
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67DDUU56LP76AJ2K7WJ733QPL2FHKKNG/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGG6WK44CYY6GEFRTCUEDANVNSX5NDH7/
• https://www.monitorix.org/news.html?n=20210127

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