CVE-2025-47792

Name	CVE-2025-47792
Description	Nextcloud Desktop is the desktop sync client for Nextcloud. In versions of Nextcloud Desktop prior to 3.15, 3rdparty applications already installed on a user machine can create link shares for almost all data via the socket API. These shares can then be easily sent off to an external service. Nextcloud Desktop fixes the issue in version 3.15. No known workarounds are available.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nextcloud-desktop (PTS)	bullseye (security), bullseye	3.1.1-2+deb11u1	vulnerable
	bookworm	3.7.3-1+deb12u1	vulnerable
	sid, trixie	3.16.4-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
nextcloud-desktop	source	(unstable)	3.15.0-1

Notes

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qm2f-959g-7p65
https://github.com/nextcloud/desktop/pull/7517
https://hackerone.com/reports/1995856
Fixed by: https://github.com/nextcloud/desktop/commit/ba4138a13dff47904947042b55358660ffa08026 (v3.15.0)