CVE-2025-66548

MediumCVSS 5.5/10Last modified Oct 15, 2026

Description

Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.12.7, 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.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-116

Affected software

No affected versions have been published.

Timeline

Published: Dec 5, 2025
Last modified: Oct 15, 2026
NVD status: Analyzed

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