CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What the vulnerability does
The Flex QR Code Generator plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in thesave_qr_code_to_db() function in all versions up to, and including, 1.2.5. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Explanation of Vulnerability in Simple Terms
Flex QR Code Generator versions 1.2.5 and earlier allow unauthenticated attackers to upload arbitrary files to the server without restriction. An attacker can upload malicious files—such as PHP scripts—over the network with no authentication required. This can lead to remote code execution, data theft, or complete site compromise.
What an attacker can do
Upload and execute arbitrary files on the server, including malicious code.
Potential impact on your site
Attackers can run malicious code on your site, steal data, or take full control without needing a user account.
Conditions required to exploit
Network access only; no authentication or user interaction required.
Key dates
External resources
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