{"action":"Upgrade nagvis to 1:1.9.48-1 or later.","affected":[{"fixed":"1:1.9.48-1","introduced":"0"}],"component":"nagvis","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:1.9.48-1"],"id":"tcs_01M5NNMXCY2CANDTK0VKBQF5N5","modified_at":"2026-10-23T17:47:37.713769893Z","published_at":"2025-12-03T10:15:47.913Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-39665","https://security-tracker.debian.org/tracker/CVE-2025-39665"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-39665#Debian:14/nagvis","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-39665"}],"summary":"User enumeration in Nagvis' Checkmk MultisiteAuth before version 1.9.48 allows an unauthenticated attacker to enumerate Checkmk usernames."}