Umbraco CMS

What owning an Umbraco site actually requires

Paying a developer by the hour does not make anyone responsible for your website. Someone still has to notice that work is needed, decide how urgent it is and make sure it gets done. On an Umbraco site, that work arrives whether or not anyone asks for new features. This is for whoever holds the budget or the supplier relationship for an Umbraco site going into 2027: what that responsibility covers, roughly what it costs, and how to decide who should carry it.

Two deadlines and three routes

Umbraco 13 loses support on December 14, 2026 – 90 days from the date this was published. This is for whoever owns that decision on an Umbraco 13 site: the technical lead, or the person who signs off the budget. It assumes you already know what End of Life means. If you do not, that part is covered here . What follows is the two dates that bound the decision, three questions to open an assessment with, and three routes – separated by whether the work fits the time you have left.

Umbraco's high-severity security patch: What it means for v14, v15, and v16

A high-severity RCE in Umbraco's backoffice API, patched August 18, 2026 - what's actually fixed, what's still exposed, and why AI-accelerated scanning makes outdated versions riskier by the week.

Upgrading Umbraco 13 to 17: What Actually Breaks

Umbraco 13 to 17 is not a routine package bump. Here is what actually breaks at each version – the backoffice rewrite, removed property editors, the JSON serialization change – and a practical strategy for getting through it without surprises.

How much does an Umbraco website cost in 2026?

A professionally built Umbraco website typically costs somewhere between €15,000 and €100,000+ , depending mainly on integrations, design, content migration, languages and accessibility requirements. However, that the range is useless without context. A straightforward marketing site, and a multilingual platform connected to an ERP are technically both “Umbraco websites”, but they are not remotely the same project.

Umbraco 13 XLTS vs upgrading: what each actually costs

Umbraco sells extended support for version 13 in 6, 12, or 24-month blocks - but does not publish the price. Here is the full cost of each route: the XLTS fee structure and what it quietly excludes, versus what an upgrade to 17 actually involves.