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 Schema Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `itemscope` shortcode in all versions up to, and including, 1.0 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
Schema Shortcode versions 1.0 and earlier contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts affecting other site visitors. The vulnerability exists in how the plugin processes shortcode input without proper sanitization. An attacker with low-level site access can craft malicious content that executes in the browsers of other users, potentially compromising their sessions or stealing data.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers when they view affected pages.
Potential impact on your site
Visitors and other users may have their sessions hijacked, credentials stolen, or be redirected to malicious sites.
Conditions required to exploit
Attacker must have low-level authenticated access to the site (e.g., contributor or subscriber role).
Key dates
External resources
Related vulnerabilities
