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.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 05 Dec 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 05 Dec 2025 16:30:00 +0000

Type Values Removed Values Added
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.
Title Nextcloud Server Contacts Search allowed users to retrieve contact information of other users beyond their contact list
Weaknesses CWE-359
References
Metrics cvssV3_1

{'score': 4.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-12-05T20:02:53.678Z

Reserved: 2025-12-03T15:12:22.978Z

Link: CVE-2025-66510

cve-icon Vulnrichment

Updated: 2025-12-05T20:02:45.644Z

cve-icon NVD

Status : Received

Published: 2025-12-05T17:16:04.613

Modified: 2025-12-05T17:16:04.613

Link: CVE-2025-66510

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses