Craft CMS versions >= 5.0.0-RC1 and < 5.10.11 fail to perform an independent authorization check in ElementsController::actionDeleteForSite(). The method loads an element with checkForProvisionalDraft enabled and runs the deletion authorization check against the user's own provisional draft (which only verifies draft ownership), then propagates the deletion to the canonical element without re-checking permissions. As a result, an authenticated user who has viewEntries, viewPeerEntries, saveEntries, savePeerEntries, and editSite permissions but lacks the deleteEntriesForSite permission can hard-delete a canonical entry's site record (and, for single-site entries, the full element and content), which is irrecoverable via Craft's recycle bin.

Craft CMS versions >= 5.0.0-RC1 and < 5.10.11 contain an authorization bypass vulnerability in ElementsController::actionDeleteForSite(). The flaw arises because the method checks deletion permissions against a user's provisional draft (verifying only draft ownership) rather than performing an independent check against the canonical element. This allows an authenticated user with certain permissions (viewEntries, viewPeerEntries, saveEntries, savePeerEntries, editSite) but lacking deleteEntriesForSite to hard-delete canonical entry site records. For single-site entries, this results in full element and content deletion. The deletion is irrecoverable via Craft's recycle bin, making this a high-severity data integrity issue. A fix is available in Craft CMS version 5.10.11.