WordPress Plugins - Stored XSS Vulnerabilities

The SlimStat Analytics plugin for WordPress contains a Stored Cross-Site Scripting vulnerability in the 'fh' (fingerprint) parameter that allows unauthenticated attackers to inject malicious scripts into pages. All versions up to and including 5.3.5 are affected due to insufficient input sanitization and output escaping. The vulnerability has a CVSS score of 7.2 with network-based attack vector requiring no privileges or user interaction, though no active exploitation (KEV) or EPSS data is currently reported.

The Simple Draft List WordPress plugin for Dartiss contains a Stored Cross-Site Scripting vulnerability in versions up to 2.6.2, caused by insufficient input sanitization and output escaping of the 'display_name' post meta field. Authenticated attackers with Contributor-level access or higher can inject arbitrary JavaScript via the {{author+link}} template tag when no author URL is present, which will execute whenever users visit pages containing the [drafts] shortcode. The vulnerability has a CVSS score of 6.4 with a network attack vector and low attack complexity, requiring only low-level privileges.

The Info Cards - Add Text and Media in Card Layouts WordPress plugin versions up to 2.0.7 contains a Stored Cross-Site Scripting vulnerability in the 'btnUrl' parameter of the Info Cards block that allows authenticated attackers with Contributor-level access to inject arbitrary JavaScript code. The vulnerability exists because the plugin fails to validate URL protocols (specifically javascript: schemes) on the server side, and the client-side rendering directly inserts unsanitized URLs into anchor href attributes, enabling script execution when users click the malicious button links. While there is no indication of active KEV exploitation, the low attack complexity and low privilege requirements make this a practical threat in multi-author WordPress environments.