XF 2.3 Browser Error Editing Signature

[RobNH]

I'm running the latest version of Xenforo with PHP 8.3.31.

I'm unable to edit my signature. If I go into code view, I get a browser error message. If I try to save my signature, I get a browser error message. See below:

Failed to load resource: the server responded with a status of 403 ()
core-compiled.js?_v=ebe81cdc:44 Error: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access this resource.</p>
</body></html>

I've been trying to fix this issue for a while, but to no avail. Thoughts?

 

[ForumDevs]

I'm running the latest version of Xenforo with PHP 8.3.31.

I'm unable to edit my signature. If I go into code view, I get a browser error message. If I try to save my signature, I get a browser error message. See below:

Failed to load resource: the server responded with a status of 403 ()
core-compiled.js?_v=ebe81cdc:44 Error: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html><head>
<title>403 Forbidden</title>
</head><body>
<h1>Forbidden</h1>
<p>You don't have permission to access this resource.</p>
</body></html>

I've been trying to fix this issue for a while, but to no avail. Thoughts?

Something in your signature trips a security rule on the server because the 403 error means the request is being killed before XenForo ever sees it. Make sure to check WAF/ModSecurity block.