CVE-2025-66549

Published: Dec 5, 2025Modified: Jun 17, 2026

2.7

Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

Exploitability: 1.2 / Impact: 1.4

Source: NVD

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.

Affected (1)

Products: Nextcloud: Desktop

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Nextcloud Desktop	From 3.0.0 to 3.16.5

Related CWEs

Generation of Error Message Containing Sensitive Information

The product generates an error message that includes sensitive information about its environment, users, or associated data.

References (4)

https://github.com/nextcloud/desktop/commit/36d6c234d42b06a6f2e9de3e413a5c3c625edad6

Source: security-advisories@github.com

Patch

https://github.com/nextcloud/desktop/pull/8330

Source: security-advisories@github.com

Issue Tracking

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h9xj-qh76-q3hw

Source: security-advisories@github.com

PatchVendor Advisory

https://hackerone.com/reports/3159877

Source: security-advisories@github.com

Permissions RequiredVendor Advisory

Timeline

No history available yet.