TYPO3 Core

Link in "Edit this account" in Flash message when " ...default backend user 'admin' with password 'password' is still present... " contains parameter returnUrl=alt_intro.php in URL, which causes a "404 File Not Found" error in following steps.

How to reproduce (introductionpackage-6.0.0):

- login to TYPO3 BE as "admin" user
- ensure current password is "password" (TYPO3's default password)
- go to: HELP - About Modules

Flash message appears:

Important Notice!
The default backend user "admin" with password "password" is still present.
Edit this account, either deleting it completely or changing the username and password.

- follow link Edit this account (note: URL contains parameter mentioned above), see attached screenshot0018.png

e.g. http://localhost/typo3/alt_doc.php?returnUrl=alt_intro.php&edit[be_users][1]=edit

- click "Save and close" icon on the top
- 404 error occurs, see attached screenshot0019.png