CVE-2025-66557

—

CVSS 3.1

4.3 medium

EPSS

<1%p20

Published

Dec 5, 2025 (Dec 5, 2025)

Modified

Jun 17, 2026

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.

Vendors: nextcloud
Products: deck
Weakness: CWE-284
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news0 stories

No ingested article mentions this CVE yet.