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NVD Vulnerability Details :
CVE-2025-66548
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-05 Dec, 2025 | 18:15
Updated At-09 Dec, 2025 | 19:01

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.13.3LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Primary3.15.5MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Type: Secondary
Version: 3.1
Base score: 3.3
Base severity: LOW
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Type: Primary
Version: 3.1
Base score: 5.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CPE Matches
Nextcloud GmbH
nextcloud
>>deck>>Versions before 1.12.7(exclusive)
cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:*
Nextcloud GmbH
nextcloud
>>deck>>Versions from 1.14.0(inclusive) to 1.14.4(exclusive)
cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:*
Nextcloud GmbH
nextcloud
>>deck>>Versions from 1.15.0(inclusive) to 1.15.1(exclusive)
cpe:2.3:a:nextcloud:deck:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-116Primarysecurity-advisories@github.com
CWE ID: CWE-116
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/nextcloud/deck/commit/afa95d3c507465b9d31af7c88c69b76711ef185asecurity-advisories@github.com
Patch
https://github.com/nextcloud/deck/pull/6671security-advisories@github.com
Issue Tracking
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xjvq-xvr7-xpg6security-advisories@github.com
Patch
Vendor Advisory
https://hackerone.com/reports/2326618security-advisories@github.com
Permissions Required
Vendor Advisory
Hyperlink: https://github.com/nextcloud/deck/commit/afa95d3c507465b9d31af7c88c69b76711ef185a
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/nextcloud/deck/pull/6671
Source: security-advisories@github.com
Resource:
Issue Tracking
Hyperlink: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xjvq-xvr7-xpg6
Source: security-advisories@github.com
Resource:
Patch
Vendor Advisory
Hyperlink: https://hackerone.com/reports/2326618
Source: security-advisories@github.com
Resource:
Permissions Required
Vendor Advisory
Change History
0Changes found
Details not found