The WP Responsive header image slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'sp_responsiveslider' shortcode in versions up to, and including, 3.2.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-5334
• https://plugins.trac.wordpress.org/browser/responsive-header-image-slider/trunk/responsive_headerimageslider.php#L343
• https://www.wordfence.com/threat-intel/vulnerabilities/id/6953dea2-ca2d-4283-97c2-45c3420d9390?source=cve