CVE-2025-66510
Last modified
CVE-2025-66510 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. 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. EPSS estimates a 0.30% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | >= 28.0.0, < 28.0.14.11 |
| Nextcloud | Nextcloud Server | >= 29.0.0, < 29.0.16.8 |
| Nextcloud | Nextcloud Server | >= 30.0.0, < 30.0.17.3 |
| Nextcloud | Nextcloud Server | >= 31.0.0, < 31.0.10 |
| Nextcloud | Nextcloud Server | >= 32.0.0, < 32.0.1 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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