CVE-2025-66548Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-116
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
nextcloud deck nextcloud:deck | before 1.12.7; from 1.14.0 before 1.14.4; from 1.15.0 before 1.15.1 | NVD |
References
- https://github.com/nextcloud/deck/commit/afa95d3c507465b9d31af7c88c69b76711ef185apatch
- https://github.com/nextcloud/deck/pull/6671issue-tracking
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xjvq-xvr7-xpg6patch, vendor-advisory
- https://hackerone.com/reports/2326618permissions-required, vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.