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OpenAdvisories
Medium · 5.4 CVE-2025-66557 EUVD-2025-201465

Nextcloud Deck app allowed user with "Can share" permission to modify permissions of other non-owners

Published Dec 5, 2025 · Updated Dec 8, 2025 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
nextcloud security-advisories >= 1.15.0-beta.1, < 1.15.2, < 1.14.6 —

Advisories 1

References