Question 1

What is the EOL Risk Score for Bitbucket 9.1?

Accepted Answer

Bitbucket 9.1 has an EOL Risk Score™ of 55 out of 100, placing it in the High risk band. The score is calculated from four factors: EOL Recency (25/40), Attack Surface (10/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is Bitbucket 9.1 still supported?

Accepted Answer

Bitbucket 9.1 is no longer supported — it has passed its end of life date (August 27, 2026). No further security patches will be issued. Upgrade to a supported version or obtain extended lifecycle support.

Question 3

When does Bitbucket 9.1 reach end of life?

Accepted Answer

Bitbucket 9.1 reached (or will reach) end of life on August 27, 2026. After this date, no security patches or bug fixes are issued by the vendor.

Question 4

What are the security risks of running Bitbucket 9.1 after end of life?

Accepted Answer

After end of life, Bitbucket 9.1 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.