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 Filestack plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'filepicker' shortcode in all versions up to, and including, 2.0.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
Filestack versions up to 2.0.8 contain a cross-site scripting (XSS) vulnerability that allows an authenticated attacker to inject malicious scripts. The vulnerability has a changed scope, meaning the impact can extend beyond the vulnerable component itself. Low-privileged users can exploit this without user interaction to compromise confidentiality and integrity.
What an attacker can do
Inject and execute malicious JavaScript in the application, affecting other users or site functionality.
Potential impact on your site
Users' sessions or data could be compromised; site functionality may be altered or defaced.
Conditions required to exploit
Attacker must have a low-privilege user account; no user interaction required.
Key dates
External resources
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