Medium (6.8) in nextcloud desktop. EPSS 26% chance of exploitation in the next 30 days.
Missing sanitization of a server response in Nextcloud Desktop Client 2.6.4 for Linux allowed a malicious Nextcloud Server to store files outside of the dedicated sync directory.
Severity
CVSS 3.1
6.8 medium
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
EPSS
26% chance of exploitation in the next 30 days; higher than 97% of CVEs (scores of 2026-10-31)