6.5

CVE-2026-45275

Nextcloud: Authorization bypass in approval feature allows unauthorized file sharing with approvers

Authorization bypass in approval feature allows unauthorized file sharing with approvers

Nextcloud is an open source content collaboration platform. Prior to version 2.7.2, a privilege escalation vulnerability exists in the Approval app that allows a user without sharing permissions to force the system to share a file with approvers. This results in an authorization bypass and privilege escalation, allowing unauthorized distribution of restricted files. This issue has been patched in version 2.7.2.
Mögliche Gegenmaßnahme
Approval: * Disable the Approval app * No other workaround available
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Approval SwPlatformnextcloud Version < 2.7.2
Weitere Schwachstelleninformationen
SystemNextcloud App
≫
Produkt Approval
Version < 2.7.2
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.36% 0.275
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE-285 Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v8q8-w6c3-3gv9
Vendor Advisory
Mitigation
https://github.com/nextcloud/approval/pull/392
Patch
Issue Tracking
https://hackerone.com/reports/3593780
Permissions Required
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-v8q8-w6c3-3gv9
Third Party Advisory