CVE-2025-66547

Published Dec 5, 2025

Last updated 4 months ago

Overview

Description
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.
Source
security-advisories@github.com
NVD status
Analyzed
Products
nextcloud_server

Risk scores

CVSS 3.1

Type
Secondary
Base score
4.3
Impact score
1.4
Exploitability score
2.8
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Severity
MEDIUM

Weaknesses

security-advisories@github.com
CWE-639

Social media

Hype score
Not currently trending

Configurations