8.8
High
CVE-2025-12846 The Blocksy Companion plugin for WordPress is vulnerable to authenticated arbitrary file upload in all versions up to,…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Blocksy Companion 2.1 | earliest → 2.1.19 | No fix stated |
Other CVEs of Blocksy Companion
The 10 CVEs of Blocksy Companion →
CVE-2026-107645
The Blocksy Companion plugin for WordPress is vulnerable to privilege escalation in versions up to, and including,…
9.1
Critical
CVE-2026-18488
The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'tagName' Block Attribute…
6.4
Medium
CVE-2026-15158
The Blocksy Companion plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and…
9.8
Critical
CVE-2026-12430
The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all…
4.4
Medium