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NVD Vulnerability Details :
CVE-2025-66547
Analyzed
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-05 Dec, 2025 | 17:16
Updated At-09 Dec, 2025 | 16:31

Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Enterprise Server prior to 31.0.1, non-privileged users can modify tags on files they should not have access to via bulk tagging. This vulnerability is fixed in 31.0.1.

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
Secondary3.14.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 4.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CPE Matches
Nextcloud GmbH
nextcloud
>>nextcloud_server>>Versions from 31.0.0(inclusive) to 31.0.1(exclusive)
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*
Nextcloud GmbH
nextcloud
>>nextcloud_server>>Versions from 31.0.0(inclusive) to 31.0.1(exclusive)
cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*
Weaknesses
CWE IDTypeSource
CWE-639Primarysecurity-advisories@github.com
CWE ID: CWE-639
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2security-advisories@github.com
Patch
Vendor Advisory
https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9security-advisories@github.com
Patch
https://github.com/nextcloud/server/issues/51247security-advisories@github.com
Issue Tracking
https://github.com/nextcloud/server/pull/51288security-advisories@github.com
Issue Tracking
https://hackerone.com/reports/3040887security-advisories@github.com
Permissions Required
Vendor Advisory
Hyperlink: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hq6c-r898-fgf2
Source: security-advisories@github.com
Resource:
Patch
Vendor Advisory
Hyperlink: https://github.com/nextcloud/server/commit/b44f1568f2dc97c746281d99e2342ad679e3d8a9
Source: security-advisories@github.com
Resource:
Patch
Hyperlink: https://github.com/nextcloud/server/issues/51247
Source: security-advisories@github.com
Resource:
Issue Tracking
Hyperlink: https://github.com/nextcloud/server/pull/51288
Source: security-advisories@github.com
Resource:
Issue Tracking
Hyperlink: https://hackerone.com/reports/3040887
Source: security-advisories@github.com
Resource:
Permissions Required
Vendor Advisory
Change History
0Changes found
Details not found