{"id":"CVE-2021-3325","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-3325","generatedAt":"2026-10-27T22:27:54.379Z","title":"Monitorix 3.13.0 allows remote attackers to bypass Basic Authentication in a default installation (i.e., an installation without a hosts_deny option).","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.","published":"2021-01-27T19:15:14.000Z","lastModified":"2026-06-17T04:04:57.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":[],"affected":["fibranet/monitorix","fedoraproject/fedora"],"epss":{"score":0.02257,"percentile":0.82837,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/mikaku/Monitorix/commit/d6816e20da1a98bcdc6372d9c36a093df5238f4a","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/mikaku/Monitorix/compare/v3.13.0...v3.13.1","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/mikaku/Monitorix/issues/309","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67DDUU56LP76AJ2K7WJ733QPL2FHKKNG/","source":"cve@mitre.org"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGG6WK44CYY6GEFRTCUEDANVNSX5NDH7/","source":"cve@mitre.org"},{"url":"https://www.monitorix.org/news.html?n=20210127","tags":["Release Notes","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/mikaku/Monitorix/commit/d6816e20da1a98bcdc6372d9c36a093df5238f4a","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/mikaku/Monitorix/compare/v3.13.0...v3.13.1","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/mikaku/Monitorix/issues/309","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/67DDUU56LP76AJ2K7WJ733QPL2FHKKNG/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGG6WK44CYY6GEFRTCUEDANVNSX5NDH7/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.monitorix.org/news.html?n=20210127","tags":["Release Notes","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-3325","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}