Mixed Media Gallery Blocks <= 3.4.4 - Authenticated (Author+) Missing Authorization to Media Folder Modification and Deletion
- ID
- WPSEC-2026-0858
- Plugin
- SimpLy Gallery (simply-gallery-block)
- Affected
- from 3.4.0 before 3.4.5
- Remediation
- Update to 3.4.5 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-862
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-13
- Attack surface
- Mixed Media Gallery Blocks on WPSec AttackSurface
- Fix released
- Published
Description
The SimpLy Gallery plugin for WordPress is vulnerable to unauthorized modification of data in versions 3.4.0 up to, and including, 3.4.4 due to missing object-level ownership and capability checks on media folders. The folder update and delete REST handlers (pgc-sgb/v1/media-folders), the folder membership assignment handler and the folder term meta auth callbacks only checked for the upload_files capability, and the folder taxonomy mapped its edit and delete term capabilities to upload_files as well. This makes it possible for authenticated attackers, with Author-level access and above, to rename, recolor, reorder or delete media folders created by other users and to change which media those folders contain. Deleting a folder also removes it from other users' attachments.
References
- https://wpsec.com/vuln/WPSEC-2026-0858/
- https://plugins.svn.wordpress.org/simply-gallery-block/tags/3.4.5/
- https://wordpress.org/plugins/simply-gallery-block/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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