The Blocksy Companion plugin for WordPress is vulnerable to authenticated arbitrary file upload in all versions up to, and including, 2.1.19. This is due to insufficient file type validation detecting SVG files, allowing double extension files to bypass sanitization while being accepted as a valid SVG file. This makes it possible for authenticated attackers, with author level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
History

Fri, 14 Nov 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 12 Nov 2025 13:00:00 +0000

Type Values Removed Values Added
First Time appeared Creativethemes
Creativethemes blocksy Companion
Wordpress
Wordpress wordpress
Vendors & Products Creativethemes
Creativethemes blocksy Companion
Wordpress
Wordpress wordpress

Tue, 11 Nov 2025 11:15:00 +0000

Type Values Removed Values Added
Description The Blocksy Companion plugin for WordPress is vulnerable to authenticated arbitrary file upload in all versions up to, and including, 2.1.19. This is due to insufficient file type validation detecting SVG files, allowing double extension files to bypass sanitization while being accepted as a valid SVG file. This makes it possible for authenticated attackers, with author level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Title Blocksy Companion <= 2.1.19 - Authenticated (Author+) Arbitrary File Upload via SVG Upload Bypass
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2025-11-14T15:29:19.575Z

Reserved: 2025-11-06T20:53:02.971Z

Link: CVE-2025-12846

cve-icon Vulnrichment

Updated: 2025-11-14T15:22:53.784Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-11-11T11:15:35.060

Modified: 2025-11-12T16:19:34.210

Link: CVE-2025-12846

cve-icon Redhat

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