CRUD and FLS is not respected for Community Users in a Standard Tab/Visualforce community if path prefix (URL) starts with the 3-char prefix of a Set

CRUD and FLS is not respected for Community Users in a Standard Tab/Visualforce community if path prefix (URL) starts with the 3-char prefix of a Set

Last updated 2020-01-31 ·Reference W-3687955 ·Reported By 4 users

Scheduled - Summer '20

If your community website URL starts with a 3-letter prefix that is also used by Salesforce, it will cause unexpected behavior in the system because of the overlap.

1. Create a custom object (e.g. TestObject), and add a custom field for demonstration purposes (e.g. TestField).
2. Set the org wide sharing settings for the object to 'Private'.
3. Create a partner user. Using either a permission set or a custom profile give the partner user 'Read' access the object (#1), and no access to the custom field (#1).
4. Create a Standard tab and visualforce community, and set the path prefix (aka URL) to 'MyCommunity'. Add the partner profile from #3 as a member of the community.
5. Create at least one record for the custom object. Hit the 'Sharing' button on the record and share it to the partner user from #3 as 'Read Only'.
6. Login as the partner user.
7. Try to open the record from #5 e.g. https://xxxxxx/MyCommunity/<recordId>. Notice you can view but not edit the record, and the custom field should not be visible [correct behaviour].
8. Go back to the community and change the path prefix to '3MPartner'.
9. Repeat step 6-7. Notice that the user can now edit the record, and the custom field is visible + editable.

You will need to make a modification to your Community Path URL. The prefixes are case-sensitive so any change should work.

Example: Changing the "3MP" prefix for 3MPartner to "3Mp" for "3Mpartner".

Is it Fixed?

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