EUVD-2026-14183
GHSA-gwmc-j777-wj8p
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Lifecycle Timeline
3Description
The Sheets2Table plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'titles' shortcode attribute in the [sheets2table-render-table] shortcode in all versions up to and including 0.4.1. This is due to insufficient input sanitization and output escaping. Specifically, the 'titles' attribute value from the shortcode is passed through S2T_Functions::trim_array_values() (which only trims whitespace) and then echoed directly into HTML via `echo $header` inside a <th> tag in the display_table_header() function without any escaping such as esc_html(). 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.
Analysis
The Sheets2Table WordPress plugin versions up to 0.4.1 contain a Stored Cross-Site Scripting (XSS) vulnerability in the [sheets2table-render-table] shortcode's 'titles' attribute, allowing authenticated attackers with Contributor-level access or higher to inject arbitrary JavaScript that executes for all users viewing affected pages. The vulnerability stems from insufficient input sanitization and output escaping in the display_table_header() function, where user-supplied shortcode attributes are echoed directly into HTML without proper escaping mechanisms such as esc_html().
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Remediation
Within 30 days: Identify affected systems running all and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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