PROBLEM Forbidden You don't have permission to access this resource

[ericraap]

Hi Felix,

I was able to solve the problem by checking the old tickets of the flevoland2020 website. Apparantly we had exactly the same issue in november 2020 but they 'forgot' to tell me. I had to find it out myself. The ticket stated:

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It seems that the blocking is caused by a security rule in the firewall:

"COMODO WAF: Multiple cross-site scripting (XSS) vulnerabilities in GetSimple CMS before 3.3.6 (CVE-2015-5355)||www.flevoland2020.nl|F|2\"

I see that version 3.3.16 of the CMS is used. The firewall blocks this based on the filename "changedata.php" and "filebrowser.php" which have not been changed in the newer versions of GetSimple.
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I did the same manipulations as they did in november 2020 for the flevoland2020 website:

in ja21flevoland.nl/admin
rename "changedata.php" to "changedata1.php"
rename "filebrowser.php" to "filebrowser1.php"
change in "filebrowser.php" text "filebrowser.php" to "filebrowser1.php"
change in "edit.php" text "filebrowser.php" to "filebrowser1.php"
change in "edit.php" text "changedata.php" to "changedata1.php"

And now everything works fine, I can add images and links....

I want to thank you very very much for all your help!

Regards, Eric