{"id":"UBUNTU-CVE-2025-39665","details":"User enumeration in Nagvis' Checkmk MultisiteAuth before version 1.9.48 allows an unauthenticated attacker to enumerate Checkmk usernames.","modified":"2026-05-20T16:22:21.621375953Z","published":"2025-12-03T10:15:00Z","upstream":["CVE-2025-39665"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-39665"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-39665"},{"type":"REPORT","url":"https://github.com/NagVis/nagvis/pull/411"},{"type":"REPORT","url":"https://github.com/NagVis/nagvis/pull/411/commits/4acabcf9d5b2d26f390e760f59def8e163908d66"},{"type":"REPORT","url":"https://www.nagvis.org/downloads/changelog/1.9.48"}],"affected":[{"package":{"name":"nagvis","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/nagvis?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.7.10+dfsg1-3","1:1.7.10+dfsg1-3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"nagvis","binary_version":"1:1.7.10+dfsg1-3ubuntu1"},{"binary_name":"nagvis-demos","binary_version":"1:1.7.10+dfsg1-3ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-39665.json"}},{"package":{"name":"nagvis","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/nagvis?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.7.10+dfsg1-3.2"],"ecosystem_specific":{"binaries":[{"binary_name":"nagvis","binary_version":"1:1.7.10+dfsg1-3.2"},{"binary_name":"nagvis-demos","binary_version":"1:1.7.10+dfsg1-3.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-39665.json"}},{"package":{"name":"nagvis","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/nagvis?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.9.25-2","1:1.9.27-1","1:1.9.28-1","1:1.9.29-1","1:1.9.30-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:1.9.30-1","binary_name":"nagvis"},{"binary_name":"nagvis-demos","binary_version":"1:1.9.30-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-39665.json"}},{"package":{"name":"nagvis","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/nagvis?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.9.36-1","1:1.9.38-1","1:1.9.39-1","1:1.9.40-1"],"ecosystem_specific":{"binaries":[{"binary_version":"1:1.9.40-1","binary_name":"nagvis"},{"binary_version":"1:1.9.40-1","binary_name":"nagvis-demos"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-39665.json"}},{"package":{"name":"nagvis","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/nagvis?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.9.44-1","1:1.9.46-1","1:1.9.47-1"],"ecosystem_specific":{"binaries":[{"binary_name":"nagvis","binary_version":"1:1.9.47-1"},{"binary_version":"1:1.9.47-1","binary_name":"nagvis-demos"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-39665.json"}},{"package":{"name":"nagvis","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/nagvis?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:1.9.47-1","1:1.9.48-1"],"ecosystem_specific":{"binaries":[{"binary_name":"nagvis","binary_version":"1:1.9.48-1"},{"binary_version":"1:1.9.48-1","binary_name":"nagvis-demos"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-39665.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}