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6.4
Schema Shortcode plugin for WordPress allows attackers to inject malicious code
CVE-2026-1575
Summary
The Schema Shortcode plugin for WordPress has a security flaw that allows attackers with contributor-level access or higher to inject malicious code into pages. This could lead to unexpected behavior or unauthorized actions when users visit those pages. To protect your site, update the plugin to a version that fixes this issue or consider replacing it with an alternative.
Original title
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 san...
Original description
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.
nvd CVSS3.1
6.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
Published: 21 Mar 2026 · Updated: 21 Mar 2026 · First seen: 21 Mar 2026