Nextcloud Deck is a Kanban-style project & personal management tool for Nextcloud. In versions prior to 1.4.8, 1.5.6, and 1.6.1, an authenticated user can move stacks with cards from their own board to a board of another user. The Nextcloud Deck app contains a patch for this issue in versions 1.4.8, 1.5.6, and 1.6.1. There are no known currently-known workarounds available.
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
Link | Tags |
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https://github.com/nextcloud/security-advisories/security/advisories/GHSA-vqhf-673w-7r3j | issue tracking exploit third party advisory |
https://github.com/nextcloud/deck/pull/3541 | issue tracking third party advisory patch |
https://hackerone.com/reports/1450117 | issue tracking exploit third party advisory |