BIT-DISCOURSE-2026-32113 Discourse: Open redirect via `sso_destination_url` cookie in `enter`

Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, the enter action in StaticController reads the ssodestinationurl cookie and redirects to it with allowotherhost: true without validating the destination URL. While this...