Question 1

What is the EOL Risk Score for Umbraco 13?

Accepted Answer

Umbraco 13 has an EOL Risk Score™ of 18 out of 100, placing it in the Low risk band. The score is calculated from four factors: EOL Recency (8/40), Attack Surface (10/30), CISA KEV Exposure (0/20), and Extended Support Availability (0/10).

Question 2

Is Umbraco 13 still supported?

Accepted Answer

Umbraco 13 is currently supported. End of life is scheduled for December 14, 2026. Plan your migration before that date to avoid security risk.

Question 3

When does Umbraco 13 reach end of life?

Accepted Answer

Umbraco 13 reached (or will reach) end of life on December 14, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Umbraco 13 after end of life?

Accepted Answer

After end of life, Umbraco 13 no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.