Detections
Analytics
CVE-2025-66548
low
Description
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.
References
https://hackerone.com/reports/2326618
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xjvq-xvr7-xpg6
https://github.com/nextcloud/deck/pull/6671
https://github.com/nextcloud/deck/commit/afa95d3c507465b9d31af7c88c69b76711ef185a