CVE-2025-66510
Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list
- State
- Published
- Severity
- 4.5 Medium
- Published
- Dec 5, 2025
- Updated
- Dec 5, 2025
- Reserved
- Dec 3, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.5 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N | GitHub_M |
Weaknesses
- CWE-359 Exposure of Private Personal Information to an Unauthorized Actor
Affected Products
| Product | Versions |
|---|---|
security-advisoriesnextcloud |
|
References
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