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.
SeverityLow
CVSS3.3
Exploit probability—
Product
Nextcloud Deck
PublishedDec 5, 2025
First seenDec 5, 2025
Weakness typeCWE-116CWE-116
How to fix
Update
- nextcloud deck1.12.7, 1.14.4, 1.15.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nextcloud deck | v < 1.12.7, 1.14.0 ≤ v < 1.14.4, 1.15.0 ≤ v < 1.15.1 | 1.12.7, 1.14.4, 1.15.1 |
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