Summary iPlain-English security verdict for Umbraco CMS, generated from its current health score, actively-exploited vulnerabilities, and latest supported version.
Umbraco CMS currently scores 100/100 — healthy. No tracked vulnerabilities are currently known to be exploited in the wild. The latest supported release is 18.0.2. It's on the latest patch with no significant known issues — keep it current.
Disclosure trend iNew CVEs published for Umbraco CMS each year (NVD). A higher bar means more disclosures that year — more scrutiny, not necessarily less safe.
Patch priority — what to act on iThe issues to fix first — actively exploited (CISA KEV) first, then by exploitation probability (EPSS), then severity. Each row's "→ fixed in" is the earliest version that patches it; "see advisory" means no fixed version is published.
Most urgent first — actively exploited, then likeliest to be exploited.
CVE-2025-67288 CRITICAL Unrestricted file upload EPSS 1% → see advisoryGet alerted about Umbraco CMS
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Versions & lifecycle iWhen each release line stops receiving security patches (end-of-life). After EOL there are no more fixes — plan upgrades before these dates.
How long each Umbraco CMS release line is supported — and when it sunsets. Select a line for its full report.
Full Umbraco CMS end-of-life dates & support timeline →
18 latest 18.0.2 Supported until 2027-06-2518.0.2 → 17 latest 17.5.3 Supported until 2028-11-2717.5.3 → 16 latest 16.5.1 End of life ended 2026-06-1216.5.1 → 15 latest 15.4.4 End of life ended 2025-11-1415.4.4 → 14 latest 14.3.4 End of life ended 2025-05-3014.3.4 → 13 latest 13.15.1 Supported until 2026-12-1413.15.1 → 12 latest 12.3.10 End of life ended 2024-06-2912.3.10 → 11 latest 11.5.0 End of life ended 2023-12-0111.5.0 → 10 latest 10.8.11 End of life ended 2025-06-1610.8.11 → 9 latest 9.5.4 End of life ended 2022-12-169.5.4 → See all upcoming end-of-life dates →Frequently asked
Is Umbraco CMS safe and patched?
Umbraco CMS currently scores 100/100 — healthy. No tracked vulnerabilities are currently known to be exploited in the wild. The latest supported release is 18.0.2. It's on the latest patch with no significant known issues — keep it current.
What should I do about Umbraco CMS now?
Upgrade Umbraco CMS to the latest supported release (18.0.2) or later and apply available security updates, then confirm against Umbraco's official advisory.
When does Umbraco CMS reach end-of-life?
The latest supported Umbraco CMS release is 18.0.2. After end-of-life a release no longer receives security patches.
Which versions of Umbraco CMS are still receiving security updates?
Supported Umbraco CMS release lines (latest 18.0.2): 18, 17, 13. End-of-life releases no longer receive security patches.
Informational only, from public data (NVD · CISA KEV · EPSS · endoflife.date), and can lag or miss vendor-specific fixes. Always confirm against Umbraco's official advisory before you patch or upgrade — Umbraco CMS official site ↗