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CVE-2025-12846

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CVE-2025-12846

Published: Nov 11, 2025

Modified: Apr 8, 2026

PUBLISHED

CVSS v3.1

8.8

HIGH

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.

VendorProductVersions

creativethemeshq

Blocksy Companion

affected
0 - <= 2.1.19

Weaknesses (CWE)

CWE-434

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

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