CVE-2025-66548 - Nextcloud Deck app allows to spoof file extensions by using RTLO characters

CVE ID : CVE-2025-66548 Published : Dec. 5, 2025, 6:15 p.m. | 47 minutes ago 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. Severity: 3.3 | LOW Visit the link for more details, such as CVSS details, affected products, timeline, and more...

Source: Telegram CVE Monitor