We have Jira Software DC (10.3.12) and Confluence DC (v9.2.10) on prem and have to use a specific OIDC server for authentication. This server only supports the client_secret_post authentication method. My understanding is that Jira and Confluence natively support client_secret_basic only.
Has anyone been able to get client_secret_post to work, aside from buying a plugin, or have any suggestions?