HexBrain

Nextcloud · Report #549831

External Storage - WebDAV - New user has access to storage from deleted user (same user-ID)

Validstatus
2upvotes
14 Feb 2021disclosed

How it was found

  • Delete existing user account "user3"
  • Create new user account "user3"

Also reported on https://github.com/nextcloud/server/issues/15258

Impact

Newly created user with same user-id of a deleted user has access to the configured external webdav storage from the deleted user.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original