ACL on Proxy Host for Nginx Proxy Manager Administration Does Not Auth

Checklist

• Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image? Yes

• Are you sure you’re not using someone else’s docker image? Yes

• If having problems with Lets Encrypt, have you made absolutely sure your site is accessible from outside of your network? N/A

Describe the bug I have a proxy host setup to NPM administration. e.g. abc.domain.com --> proxy host to NPM:81. This is working fine. I would like to add an ACL with HTTP basic auth in-front of the NPM login screen. Doing so causes auth to prompt but credentials do not work on Chrome or Firefox. Seems to work on Safari.

• What version of Nginx Proxy Manager is reported on the login page? 2.7.2 (which is a bug since 2.7.3 is installed)

To Reproduce

1. Create a proxy host rule to NPM administration.
2. Add an access list to the proxy host rule.
3. Test on Google Chrome or Firefox.

Expected behavior Auth to success and show the NPM administration login screen.

Operating System NPM is running on a RPI4 via Docker. Browsers have been tested on both MacOS and Windows.

[vercas]

I am having a similar issue. I can get past the HTTP auth prompt, but then it won’t accept my username and password.
It simply says Unauthorized. under the password field.

[chaptergy]

Duplicate of https://github.com/jc21/nginx-proxy-manager/issues/334