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The 15 most recently published vulnerabilities affecting checkmk.

• CVE-2026-9549Fix XSS in service discovery active check output4.8Jun 8, 2026
• CVE-2026-8833XSS in urls5.4Jun 8, 2026
• CVE-2026-8078Fix stored XSS in global settings change log4.8Jun 8, 2026
• CVE-2026-7765User Messages widget leaked issuer messages on shared dashboards5.3Jun 8, 2026
• CVE-2026-7186Fix stored XSS in URL dashboard widget via dangerous URI schemes5.4Jun 8, 2026
• CVE-2026-33457Potential livestatus injection in prediction graph page6.3Apr 10, 2026
• CVE-2026-33456Potential livestatus injection in notification test7.6Apr 10, 2026
• CVE-2026-33455Livestatus injection in monitoring quicksearch6.3Apr 10, 2026
• CVE-2025-39666omd: Local privilege escalation when executing omd commands as root7.3Apr 7, 2026
• CVE-2026-3466Cross-site scripting in dashlet title5.4Apr 7, 2026
• CVE-2026-24096Insufficient permission validation on multiple REST API Quick Setup endpoints8.8Apr 1, 2026
• CVE-2026-20915Stored cross-site scripting in Pending Changes sidebar5.4Mar 31, 2026
• CVE-2026-33276XSS in Unified Search via Unescaped Host/Service Names5.4Mar 31, 2026
• CVE-2025-64998Session hijacking via exposed session signing secret in distributed Checkmk setups7.2Mar 24, 2026
• CVE-2026-2859Unauthenticated Host Enumeration via Observable Response Discrepancy on Deploy Agent Endpoint4.3Mar 13, 2026