CVE-2025-66547

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Source

https://cve.org/CVERecord?id=CVE-2025-66547

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66547.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2025-66547

Aliases

BIT-nextcloud-2025-66547
GHSA-hq6c-r898-fgf2

Published

2025-12-05T16:32:17.359Z

Modified

2026-07-15T01:48:52.943367649Z

Severity

4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator

Summary

Nextcloud Server users can modify tags on files that do not belong to them

Details

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.

Database specific

{
    "cwe_ids": [
        "CWE-639"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66547.json"
}

References

Affected packages

Git / github.com/nextcloud/server

Affected ranges

Type

GIT

Repo

https://github.com/nextcloud/server

Events

Introduced

051e46a7a272300cf7c90b3e330fd1501fd6a996

Fixed

ca86133382c6efb7c0eb82e5b9806a84bad2b9dc

Fixed

b44f1568f2dc97c746281d99e2342ad679e3d8a9

Database specific

{
    "extracted_events": [
        {
            "introduced": "31.0.0"
        },
        {
            "fixed": "31.0.1"
        }
    ],
    "cpe": [
        "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*",
        "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*"
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

v31.*

v31.0.0

v31.0.1rc1

v31.0.1rc2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66547.json"