Orchard CMS 1.10.3 through 1.11 Improper Authorization via Media Library Folder Permission Check

Advisories

Orchard CMS 1.10.3 through 1.11 Improper Authorization via Media Library Folder Permission Check

Severity: high
Date: 10/30/2026
Affecting: Orchard >= 1.10.3, <= 1.11
CVE: CVE-2026-119649
CWE: CWE-863 Incorrect Authorization
CVSS: 7.1
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N
References: https://github.com/OrchardCMS/Orchard/issues/8895
https://github.com/OrchardCMS/Orchard/blob/1.11/src/Orchard.Web/Modules/Orchard.MediaLibrary/Services/MediaLibraryService.cs#L281-L302
https://github.com/OrchardCMS/Orchard/blob/1.11/src/Orchard.Web/Modules/Orchard.MediaLibrary/Services/IMediaLibraryService.cs#L169-L177
https://hackmd.io/@hieuPenguinnn/orchard-media-library-cross-user-broken-access-control
https://github.com/OrchardCMS/Orchard
Credit: hieuPenguinnn
Description: Orchard CMS 1.10.3 through 1.11 contains an improper authorization vulnerability in MediaLibraryService.CheckMediaFolderPermission() that allows authenticated Authors and Contributors to access other users' media. Attackers can display, clone, and delete other users' media items by content id and delete arbitrary media folders via FolderController.Delete().

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