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6.4

TableOn WordPress Plugin Allows Attackers to Inject Malicious Code

CVE-2026-3513
Summary

The TableOn WordPress plugin has a security flaw that lets attackers inject malicious code into pages if they have a certain level of access. This could allow them to take control of or disrupt your website. Update the plugin to a fixed version as soon as possible to protect your site.

Original title
The TableOn – WordPress Posts Table Filterable plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tableon_button' shortcode in all versions up to and including 1.0.4.4. This...
Original description
The TableOn – WordPress Posts Table Filterable plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tableon_button' shortcode in all versions up to and including 1.0.4.4. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes such as 'class', 'help_link', 'popup_title', and 'help_title'. The do_shortcode_button() function extracts these attributes without sanitization and passes them to TABLEON_HELPER::draw_html_item(), which concatenates attribute values into HTML using single quotes without escaping (line 29: $item .= " {$key}='{$value}'"). 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: 8 Apr 2026 · Updated: 8 Apr 2026 · First seen: 8 Apr 2026