CVE-2026-4303
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
The WP Visitor Statistics (Real Time Traffic) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wsm_showDayStatsGraph' shortcode in all versions up to and including 8.4 due to insufficient input sanitization and output escaping on user-supplied attributes. This allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts that execute whenever a user accesses an injected page.
Risk Assessment
Authenticated attackers with contributor-level access or higher can inject arbitrary web scripts into pages, which execute when any user visits the compromised page. This could lead to session theft, redirects to malicious sites, or other attacks against users.
Recommendation
Immediately update the WP Visitor Statistics plugin to the latest available version that fixes this vulnerability. If no update is available, temporarily disable the plugin or restrict shortcode usage to trusted users only.
Original NVD description (English source)
The WP Visitor Statistics (Real Time Traffic) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wsm_showDayStatsGraph' shortcode in all versions up to, and including, 8.4 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.