CVE-2026-23623 Collabora Online vulnerable to Authorization Bypass

Collabora Online is a collaborative online office suite based on LibreOffice technology. Prior to Collabora Online Development Edition version 25.04.08.2 and prior to Collabora Online versions 23.05.20.1, 24.04.17.3, and 25.04.7.5, a user with view-only rights and no download privileges can obtai...

CVE-2026-23623

CVE-2026-23623 affects Collabora Online and Collabora Online Development Edition. A user with view-only rights and no download privileges can obtain a local copy of a shared file. The vulnerability is triggered by pressing Ctrl+Shift+S, which initiates the file download process despite missing do...