Nextcloud Deck vulnerabilities
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Published CVEs affecting Nextcloud Deck: 3 record(s), with affected versions and fixes.cpe:2.3:a:nextcloud:deck
CVE-2026-77170
Medium · 4.3
CWE-284 Sep 17, 2026
Improper Access Control in Nextcloud Deck
The Deck config API allows authenticated users to set board-scoped configuration keys for arbitrary board IDs without validating whether the user owns or has permission to manage the referenced board.
CVE-2025-66557
Medium · 4.3
CWE-284 Dec 5, 2025
Nextcloud Deck app allowed user with "Can share" permission to modify permissions of other non-owners
Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with "Can share" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2.
CVE-2025-66548
Medium · 5.5
CWE-116 Dec 5, 2025
Nextcloud Deck app allows to spoof file extensions by using RTLO characters
Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 1.14.4, and 1.15.1, file extension can be spoofed by using RTLO characters, tricking users into download files with a different extension than what is displayed. This vulnerability is fixed in 1.12.7, 1.14.4, and 1.15.1.