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[GH-ISSUE #4667] internal error access list 2.12.6 #2969

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opened 2026-02-26 07:37:26 +03:00 by kerem · 3 comments

kerem commented

2026-02-26 07:37:26 +03:00

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Originally created by @NexusNano on GitHub (Jul 20, 2025).
Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/4667

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
Have you searched for similar issues (both open and closed)?
- Yes

Describe the bug

internal server error when trying to create and/or apply Access control list feature

Nginx Proxy Manager Version

2.12.6

To Reproduce
Steps to reproduce the behavior:

Go to access list
Click on add list
input information
click save
get internal error
does in fact appear to save when reloading of page
does let me apply to proxy hosts though provides same internal error when trying to save
does not filter external ip's as expected

found closed issue for version 2.9
did not provide solution

Originally created by @NexusNano on GitHub (Jul 20, 2025). Original GitHub issue: https://github.com/NginxProxyManager/nginx-proxy-manager/issues/4667 - 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 - Have you searched for similar issues (both open and closed)? - Yes **Describe the bug**  internal server error when trying to create and/or apply Access control list feature **Nginx Proxy Manager Version**  2.12.6 **To Reproduce** Steps to reproduce the behavior: 1. Go to access list 2. Click on add list 3. input information 4. click save 5. get internal error does in fact appear to save when reloading of page does let me apply to proxy hosts though provides same internal error when trying to save does not filter external ip's as expected found closed issue for version 2.9 did not provide solution

kerem

2026-02-26 07:37:26 +03:00

closed this issue
added the
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kerem commented

2026-02-26 07:37:27 +03:00

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Owner

@ubuangel commented on GitHub (Jul 22, 2025):

same error

@ubuangel commented on GitHub (Jul 22, 2025): same error

kerem commented

2026-02-26 07:37:27 +03:00

Author

Owner

@ubuangel commented on GitHub (Jul 22, 2025):

A serious solution:

To enable Let's Encrypt SSL in Nginx Proxy Manager, it consists of 3 phases (respecting the order one after the other):

Add proxy host
Domain name
Forward Hostname / IP*
Forward port
Edit proxyhost r -> SSL option -> Request a new SSL certificate -> Use a DNS challenge -> DNS provider -> Cloudflare -> Credentials File Content -> Add token -> Accept your server and know
SSL option -> Enable Force SSL -> Enable HTTP/2 support -> Enable block common exploit

good luck!!

@ubuangel commented on GitHub (Jul 22, 2025): A serious solution: To enable Let's Encrypt SSL in Nginx Proxy Manager, it consists of 3 phases (respecting the order one after the other): 1) Add proxy host Domain name Forward Hostname / IP* Forward port 2) Edit proxyhost r -> SSL option -> Request a new SSL certificate -> Use a DNS challenge -> DNS provider -> Cloudflare -> Credentials File Content -> Add token -> Accept your server and know 3) SSL option -> Enable Force SSL -> Enable HTTP/2 support -> Enable block common exploit good luck!!

kerem commented

2026-02-26 07:37:27 +03:00

Author

Owner

@NexusNano commented on GitHub (Jul 27, 2025):

Enabling SSL encryption is not quite what I'm trying to do as I've already accomplished that particular task some time ago. thank you for your reply, though. i was looking for a way to whitelist external IP address's. I've since found a way to do this within Cloudflares UI, so I've moved past this issue. Bug still exists however.

@NexusNano commented on GitHub (Jul 27, 2025): Enabling SSL encryption is not quite what I'm trying to do as I've already accomplished that particular task some time ago. thank you for your reply, though. i was looking for a way to whitelist external IP address's. I've since found a way to do this within Cloudflares UI, so I've moved past this issue. Bug still exists however.

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