CVE-2025-66510
Dec. 10, 2025, 4:12 p.m.
4.5
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.
Product(s) Impacted
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud |
|
|
Weaknesses
Common security weaknesses mapped to this vulnerability.
CWE-359
Exposure of Private Personal Information to an Unauthorized Actor
The product does not properly prevent a person's private, personal information from being accessed by actors who either (1) are not explicitly authorized to access the information or (2) do not have the implicit consent of the person about whom the information is collected.
*CPE(s)
Affected systems and software identified for this CVE.
| Type | Vendor | Product | Version | Update | Edition | Language | Software Edition | Target Software | Target Hardware | Other Information |
|---|---|---|---|---|---|---|---|---|---|---|
| a | nextcloud | nextcloud_server | / | / | / | / | enterprise | / | / | / |
| a | nextcloud | nextcloud_server | / | / | / | / | enterprise | / | / | / |
| a | nextcloud | nextcloud_server | / | / | / | / | enterprise | / | / | / |
| a | nextcloud | nextcloud_server | / | / | / | / | - | / | / | / |
| a | nextcloud | nextcloud_server | / | / | / | / | enterprise | / | / | / |
| a | nextcloud | nextcloud_server | / | / | / | / | - | / | / | / |
Tags
CVSS Score
CVSS Data - 3.1
- Attack Vector: NETWORK
- Attack Complexity: LOW
- Privileges Required: HIGH
- Scope: UNCHANGED
- Confidentiality Impact: HIGH
- Integrity Impact: NONE
- Availability Impact: NONE
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N
Timeline
Published: Dec. 5, 2025, 5:16 p.m.
Last Modified: Dec. 10, 2025, 4:12 p.m.
Last Modified: Dec. 10, 2025, 4:12 p.m.
Status : Analyzed
CVE has had analysis completed and all data associations made.
More infoSource
security-advisories@github.com
*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.