4.3

CVE-2026-45264

Nextcloud: ACL Rename Permission Bypass in Team Folders Allows Unauthorized File Renames

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 rename files in the team folder. This issue has been patched in versions 17.0.15, 18.1.12, 19.1.16, 20.1.11, and 21.0.4.
Mögliche Gegenmaßnahme
Team Folders: * Disable Team Folders app
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellernextcloud
≫
Produkt security-advisories
Version >= 17.0.0, < 17.0.15
Status affected
Version >= 18.0.0, < 18.1.12
Status affected
Version >= 19.0.0, < 19.1.16
Status affected
Version >= 20.0.0, < 20.1.11
Status affected
Version >= 21.0.0, < 21.0.4
Status affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Weitere Schwachstelleninformationen
SystemNextcloud App
≫
Produkt Team Folders
Version >= 17.0.0, < 17.0.15
Version >= 18.0.0, < 18.1.12
Version >= 19.0.0, < 19.1.16
Version >= 20.0.0, < 20.1.11
Version >= 21.0.0, < 21.0.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.134
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wx2x-822r-rvmf
https://github.com/nextcloud/groupfolders/pull/4361
https://hackerone.com/reports/3540673
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wx2x-822r-rvmf
Third Party Advisory