CVE-2026-45264

Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a team folder can...

CVE-2026-45264 Nextcloud: ACL Rename Permission Bypass in Team Folders Allows Unauthorized File Renames

Nextcloud is an open source content collaboration platform. From versions 17.0.0 to before 17.0.15, 18.0.0 to before 18.1.12, 19.0.0 to before 19.1.16, 20.0.0 to before 20.1.11, and 21.0.0 to before 21.0.4, a user with READ and CREATE permission, but no UPDATE permission for a team folder can...

Team folders access control vulnerability

Team Folders is an open-source file sharing software developed by Nextcloud. Versions of Team Folders from 17.0.0 to 17.0.15, from 18.0.0 to 18.1.12, from 19.0.0 to 19.1.16, from 20.0.0 to 20.1.11, and from 21.0.0 to 21.0.4 contain an access control vulnerability. This vulnerability stems from a...