Title: core files changed
Last modified: May 13, 2022

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# core files changed

 *  Resolved [gfour](https://wordpress.org/support/users/gfour/)
 * (@gfour)
 * [4 years ago](https://wordpress.org/support/topic/core-files-changed/)
 * Hello,
    I recently got critical errors (high severity issues) by Wordfence about
   some WP core files changing. These files are
    - wp-login.php,
    - wp-signup.php,
    - wp-comments-post.php,
    - wp-load,
    - wp-activate.php and
    - license.txt.
 *  That what I see, when I go trough Details->View Difference for any of these 
   files, seems to me not to be malicious changes but surely wasn’t by me.
    I maintain
   two wordpress websites (dev and production) on different VPS with WP 5.6.8 and
   Woo 4.7. These critical errors appeared on the developer server only. May I have
   an advice on this matter, please? Thank you in advance.

Viewing 1 replies (of 1 total)

 *  Plugin Support [wfpeter](https://wordpress.org/support/users/wfpeter/)
 * (@wfpeter)
 * [4 years ago](https://wordpress.org/support/topic/core-files-changed/#post-15657686)
 * Hi [@gfour](https://wordpress.org/support/users/gfour/),
 * Are you running alpha/beta/RC versions of WordPress still in development on your
   development server? Wordfence will be comparing the files to final releases so
   could pick up legitimate repository changes on unreleased WordPress versions 
   for this reason.
 * Thanks,
 * Peter.

Viewing 1 replies (of 1 total)

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## Tags

 * [core files](https://wordpress.org/support/topic-tag/core-files/)

 * 1 reply
 * 2 participants
 * Last reply from: [wfpeter](https://wordpress.org/support/users/wfpeter/)
 * Last activity: [4 years ago](https://wordpress.org/support/topic/core-files-changed/#post-15657686)
 * Status: resolved