CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
What the vulnerability does
The Qyrr – simply and modern QR-Code creation plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the blob_to_file() function in all versions up to, and including, 2.0.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Explanation of Vulnerability in Simple Terms
Qyrr – simply and modern QR-Code creation versions 2.0.7 and earlier allow authenticated users to upload files without proper validation. An attacker with low-level site access can upload malicious files that may affect other users or site functionality. The vulnerability requires a valid user account but no special privileges.
What an attacker can do
Upload files without validation to compromise site integrity or access other users' data.
Potential impact on your site
Malicious files uploaded by compromised or rogue user accounts could alter site content or expose user data.
Conditions required to exploit
Attacker must have a low-level user account on the site; no special privileges required.
Key dates
External resources
Related vulnerabilities
