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 GutenGeek Free Gutenberg Blocks for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 1.1.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the SVG file.
Explanation of Vulnerability in Simple Terms
GutenGeek Free Gutenberg Blocks for WordPress versions up to 1.1.3 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site visitors, including administrators. The vulnerability affects the block editor and persists across page loads.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers when they view affected pages.
Potential impact on your site
Attackers with low-privilege accounts can deface content, steal admin session tokens, or redirect visitors to malicious sites.
Conditions required to exploit
Attacker must have a WordPress user account with at least Contributor or Editor role.
Key dates
External resources
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