Title: WordPress core file modified
Last modified: November 4, 2020

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# WordPress core file modified

 *  Resolved [Aan de Silva](https://wordpress.org/support/users/aands/)
 * (@aands)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/wordpress-core-file-modified-8/)
 * Hi,
    I got the below email from WordFence. What could be the reason?
 * High Severity Problems:
 * * WordPress core file modified: wp-admin/network/site-users.php
 * * WordPress core file modified: wp-includes/class-wp-xmlrpc-server.php

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Plugin Support [WFAdam](https://wordpress.org/support/users/wfadam/)
 * (@wfadam)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/wordpress-core-file-modified-8/#post-13621604)
 * Hello [@aands](https://wordpress.org/support/users/aands/) and thanks for reaching
   out to us!
 * Could you send screenshots from your scan to show some more details on this find?
 * Also, can you send a diagnostic report to **wftest @ wordfence . com**? You can
   find the link to do so at the top of the **Wordfence Tools > Diagnostics** page.
   Then click on **“Send Report by Email”**. Please add your forum username where
   indicated and _respond here after you have sent it._
 * Thanks!
 *  Thread Starter [Aan de Silva](https://wordpress.org/support/users/aands/)
 * (@aands)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/wordpress-core-file-modified-8/#post-13622683)
 * Thanks.
    I sent the Diagnostics and forward the email as well. At the latest 
   scan, I got more WordPress core file modified records as below.
 * High Severity Problems:
 * * WordPress core file modified: wp-admin/admin-header.php
 * * WordPress core file modified: wp-admin/includes/class-custom-background.php
 * * WordPress core file modified: wp-admin/includes/class-custom-image-header.php
 * * WordPress core file modified: wp-admin/includes/media.php
 * * WordPress core file modified: wp-admin/includes/ms.php
 * * WordPress core file modified: wp-admin/includes/template.php
 * * WordPress core file modified: wp-admin/js/custom-background.js
 * * WordPress core file modified: wp-admin/js/custom-background.min.js
 * * WordPress core file modified: wp-admin/media-new.php
 * * WordPress core file modified: wp-includes/embed.php
 * * WordPress core file modified: wp-includes/meta.php
 *  Plugin Support [WFAdam](https://wordpress.org/support/users/wfadam/)
 * (@wfadam)
 * [5 years, 7 months ago](https://wordpress.org/support/topic/wordpress-core-file-modified-8/#post-13625274)
 * Looks like you’re on WP 5.5.3. That could be causing these results.
 * Make sure that Wordfence is up to date and run a Standard Scan. Let me know if
   it still detects the same results.
 * Thanks!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘WordPress core file modified’ is closed to new replies.

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 * 3 replies
 * 2 participants
 * Last reply from: [WFAdam](https://wordpress.org/support/users/wfadam/)
 * Last activity: [5 years, 7 months ago](https://wordpress.org/support/topic/wordpress-core-file-modified-8/#post-13625274)
 * Status: resolved