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CVE-2025-66549
Nextcloud Desktop discloses information when attempting to lock a file inside a end-to-end encrypted directory
Low2.4EPSS 0.32%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low2.4 | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:N |
| NVDNVD · Analyzed | 3.1 | Low2.7 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.32% · top 75% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.4.
Weakness
Affected products
nextcloud · security-advisories
- affected < 3.16.5
References (4)
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hw (opens in a new tab)x_refsource_CONFIRM
- https://github.com/nextcloud/desktop/pull/8330 (opens in a new tab)x_refsource_MISC
- https://github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6 (opens in a new tab)x_refsource_MISC
- https://hackerone.com/reports/3159877 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2025-66549)Record last updated .