CVE-2025-66547

CWE-639 — Insecure Direct Object Reference2 documents2 sources
Severity
4.3MEDIUM
EPSS
0.0%
top 93.54%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Nextcloud Security-advisoriesNextcloud Nextcloud Server
Timeline
PublishedDec 5

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NExploitability: 2.8 | Impact: 1.4

Affected Packages2 packages

▶NVDnextcloud/nextcloud_server31.0.0 — 31.0.1
▶CVEListV5nextcloud/security-advisories< 31.0.1

Patches

Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

1
CVEList
Nextcloud Server users can modify tags on files that do not belong to them↗2025-12-05
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