[wp-trac] [WordPress Trac] #63066: Warning when array passed to wp_check_invalid_utf8()

[WordPress Trac]

#63066: Warning when array passed to wp_check_invalid_utf8()
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 Reporter:  leedxw        |       Owner:  (none)
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  General       |     Version:  6.7.2
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by siliconforks):

 It seems like there are three different issues here.

 ===== 1. The original reported issue on the `wp-login.php` page.

 [https://github.com/WordPress/wordpress-
 develop/blob/e062f66c61324370fa4d04917c90b00a1c2ffbde/src/wp-
 login.php#L416 The underlying cause of the problem] appears to be that
 `login_footer()` in `wp-login.php` does not check that
 `$_GET['redirect_to']` is a string before passing it to `sanitize_url()`.

 In [58023], validation of `redirect_to` was added in a few different
 locations, but it looks like this one was missed.

 ===== 2. The "Array to string conversion" issue on the `wp-
 admin/customize.php` page.

 I suspect this is coming from a plugin or theme (I can't reproduce it on a
 clean install with no plugins), but a stack trace will probably be needed
 to know for sure.

 @garrigan - did you check your site's error log?  I think there should be
 a stack trace there?

 ===== 3. The 404 error

 This is a known issue: #54435

 I don't think this is related to the "Array to string conversion" issue.

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Ticket URL: <https://core.trac.wordpress.org/ticket/63066#comment:7>
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