CVSS base score
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
What the vulnerability does
The Progress Bar Blocks for Gutenberg plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 1.0.0 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
Progress Bar Blocks for Gutenberg versions up to 1.0.0 contain a stored cross-site scripting (XSS) vulnerability. An authenticated user with low privileges can inject malicious scripts into progress bar blocks. When other users view the affected content, the injected code runs in their browser, potentially allowing the attacker to steal session tokens, modify page content, or perform actions on their behalf.
What an attacker can do
Inject malicious scripts that execute in other users' browsers when they view the affected page.
Potential impact on your site
Attackers with contributor or author access can compromise other users' sessions and modify site content without detection.
Conditions required to exploit
Attacker must have a low-privilege WordPress account and the victim must view a page containing the malicious progress bar block.
Key dates
External resources
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