Umbraco 18 · Version Status
Umbraco 18 End of Life Date
Umbraco 18 end-of-life date, support status, and CVE risk. Data from endoflife.date and official vendor documentation.
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Umbraco 18 is actively supported. EOL date: June 25, 2027.
📅 Get reminded before Umbraco 18 reaches EOL on June 25, 2027 — alerts 90, 30 & 7 days out.
EOL Date
Jun 25, 2027
317 days remaining
Latest Release
18.1.0
Standard release
Release Date
Jun 25, 2026
Umbraco 18 series
Lifecycle detail
Umbraco 18 was released on June 25, 2026 and support is scheduled to end on June 25, 2027 — a planned supported lifespan of 1 year, shorter than the 1 year and 3 months median for Umbraco releases. It is not an LTS release; Umbraco reserves longer patch windows for its LTS versions. Its most recent patch is 18.1.0, published August 5, 2026.
Attack Surface
10/30 Medium tier
CISA KEV Exposure
0/20 Not in KEV
Extended Support
0/10 Available
EOL Risk Score™ — proprietary methodology by endoflife.ai. Factors: EOL recency, attack surface breadth, CISA KEV catalog presence, extended support availability. Updated at every build.
Methodology → ·
View score card →
| Version | Latest | EOL Date | Status |
|---|
| 6 |
6.2.6 |
May 1, 2018 |
EOL |
| 7 LTS |
7.15.11 |
Sep 30, 2023 |
EOL |
| 8 LTS |
8.18.15 |
Feb 24, 2025 |
EOL |
| 9 |
9.5.4 |
Dec 16, 2022 |
EOL |
| 10 LTS |
10.8.11 |
Jun 16, 2025 |
EOL |
| 11 |
11.5.0 |
Dec 1, 2023 |
EOL |
| 12 |
12.3.10 |
Jun 29, 2024 |
EOL |
| 13 LTS |
13.16.0 |
Dec 14, 2026 |
Warning |
What does Umbraco 18 end of life mean?
When Umbraco 18 reaches end of life, the maintainers stop issuing security patches for this version. CVEs discovered after the EOL date are publicly disclosed on the National Vulnerability Database with no patch available. Exploit code frequently appears on GitHub within days of disclosure.
The CVE blind spot: Most vulnerability scanners check for known CVEs but do not flag the ongoing accumulation of unpatched vulnerabilities in EOL software versions. Running Umbraco 18 past its EOL date creates a permanently growing attack surface that standard security tooling will not surface.
Migrate to Umbraco 18 or implement compensating controls — network segmentation, enhanced monitoring, restricted access — while migration is underway.
Frequently Asked Questions
When does Umbraco 18 reach end of life?
Umbraco 18 reached end of life on June 25, 2027. That is 317 days remaining.
Is Umbraco 18 still supported?
Yes, Umbraco 18 is currently supported. The EOL date is June 25, 2027.
What should I upgrade to from Umbraco 18?
The recommended upgrade from Umbraco 18 is
Umbraco 18 — the latest actively supported version. Check the
Umbraco full timeline for all supported versions.
What are the security risks of running Umbraco 18 past EOL?
When Umbraco 18 reaches end of life, the maintainers stop issuing security patches. Any CVEs disclosed after the EOL date accumulate with no remediation path. Most vulnerability scanners do not flag this — it is the CVE blind spot. Organizations running EOL Umbraco should migrate immediately or implement compensating controls.