Unexpected error when logging in with latest browser extension - 404 on /identity/accounts/prelogin/password

[Amamiya23]

Subject

Unexpected error when logging in with the latest browser extension (Chrome).

Deployment method

Docker (vaultwarden/server:latest)

Steps To Reproduce

1. Use the latest Bitwarden browser extension (Chrome)
2. Attempt to log in to the self-hosted Vaultwarden instance
3. Login fails with an unexpected error

Expected behaviour

Successful login.

Actual behaviour

Login fails. The server returns a 404 for the prelogin endpoint.

Logs

[2026-05-30 03:12:37.057][request][INFO] POST /identity/accounts/prelogin/password
[2026-05-30 03:12:37.057][response][INFO] 404 Not Found

Environment

• Browser: Chrome
• Docker image: vaultwarden/server:latest

Additional context

The endpoint /identity/accounts/prelogin/password returns 404, which suggests the latest browser extension is calling a new API route that Vaultwarden has not yet implemented.