CVE-2025-66549
Last modified
CVE-2025-66549 is a low-severity vulnerability rated 2.7/10 on the CVSS scale. Nextcloud Desktop is the desktop sync client for Nextcloud. Prior to 3.16.5, when trying to manually lock a file inside an end-to-end encrypted directory, the path of the file was sent to the server unencrypted, making it possible for administrators to see it in log files. EPSS estimates a 0.24% chance of exploitation in the next 30 days.
Description
Nextcloud Desktop is the desktop sync client for Nextcloud. Prior to 3.16.5, when trying to manually lock a file inside an end-to-end encrypted directory, the path of the file was sent to the server unencrypted, making it possible for administrators to see it in log files. This vulnerability is fixed in 3.16.5.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Desktop | >= 3.0.0, < 3.16.5 |
References
- https://github.com/nextcloud/desktop/pull/8330Issue Tracking
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hwPatch, Vendor Advisory
- https://hackerone.com/reports/3159877Permissions Required, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-66549?
How severe is CVE-2025-66549?
How do I fix CVE-2025-66549?
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2025
- CVE-2025-66543Rejected reason: Not used
- CVE-2025-66544Rejected reason: Not used
- CVE-2025-66545Nextcloud Groupfolders provides admin-configured folders sha…4.3
- CVE-2025-66546Nextcloud Calendar is a calendar app for Nextcloud. Prior to…3.3
- CVE-2025-66547Nextcloud Server is a self hosted personal cloud system. In …4.3
- CVE-2025-66548Nextcloud Deck is a kanban style organization tool aimed at …5.5
- CVE-2025-6655PDF-XChange Editor PRC File Parsing Out-Of-Bounds Read Infor…3.3
- CVE-2025-66550Nextcloud Calendar is a calendar app for Nextcloud. Prior to…5.7
- CVE-2025-66551Nextcloud Tables allows you to create your own tables with i…4.3
- CVE-2025-66552Nextcloud Server is a self hosted personal cloud system. In …4.3
- CVE-2025-66553Nextcloud Tables allows you to create your own tables with i…4.3
- CVE-2025-66554Contacts app for Nextcloud easily syncs contacts from variou…5.4
Are you affected by CVE-2025-66549?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST