Symptoms
After upgrading to Apache 2.4.63 the htaccess redirects that contain unencoded "?" will fail to work showing a 403 error
Description
The latest Apache updates to their module mod_rewrite are affecting the not encoded question mark (%3f) and the redirect fails with a 403 error.
We've opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-46390. Follow this article to receive an email notification when a solution is published in the product.
Workaround
Add the UnsafeAllow3F flag to the rewrite rules to allow not encoded question marks.
More info above the mentioned rewrite flag can be found on the Apache documentation page:
