Description

Nextcloud Server 30.0.0 is vulnerable to an Insecure Direct Object Reference (IDOR) in the /core/preview endpoint. Any authenticated user can access previews of arbitrary files belonging to other users by manipulating the fileId parameter. This allows unauthorized disclosure of sensitive data, such as text files or images, without prior sharing permissions.

INFO

Published Date :

2025-12-12T00:00:00.000Z

Last Modified :

2025-12-12T19:12:34.083Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2025-64011 vulnerability.

Vendors Products
Nextcloud
  • Nextcloud Server
  • Server
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-64011.

URL Resource
https://drive.google.com/file/d/1eD3PN-u1caZYgGH96XHmJ7h_OBXEAHW4/view?usp=sharing cve-icon cve-icon
https://gist.github.com/tarekramm/586dfe2d113fedfee6d71182570fc090 cve-icon cve-icon
https://nextcloud.com cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact