CVE-2025-66510
Medium
Description
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server prior to 31.0.10 and 32.0.1 and Nextcloud Enterprise Server prior to 28.0.14.11, 29.0.16.8, 30.0.17.3, and 31.0.10, contacts search allowed to retrieve personal data of other users (emails, names, identifiers) without proper access control. This allows an authenticated user to retrieve information about accounts that are not related or added as contacts.
SeverityMedium
CVSS4.5
Exploit probability—
Product
Nextcloud Server
PublishedDec 5, 2025
First seenDec 5, 2025
Weakness typeCWE-359CWE-359
How to fix
Update
- nextcloud nextcloud_server28.0.14.11, 29.0.16.8, 30.0.17.3, 31.0.10, 32.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nextcloud nextcloud_server | 28.0.0 ≤ v < 28.0.14.11, 29.0.0 ≤ v < 29.0.16.8, 30.0.0 ≤ v < 30.0.17.3, 31.0.0 ≤ v < 31.0.10, 32.0.0 ≤ v < 32.0.1 | 28.0.14.11, 29.0.16.8, 30.0.17.3, 31.0.10, 32.0.1 |
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