CVE-2026-9635

The WP Shortcode by MyThemeShop plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' parameter of the [tab] shortcode in versions up to, and including, 1.4.17. This is due to insufficient input sanitization and output escaping in the mts_tabs() function, which outputs the title shortcode attribute directly into the HTML output between anchor tags without applying any escaping functions. 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.

Score

CVSS 3.1 6.4 Medium

Status

Deferred - security@wordfence.com

Published

2026-07-23

Last modified

2026-07-23

Weaknesses

CWE-79

Affected products

• Wp Shortcode By Mythemeshop (Mythemeshop)

References

• https://plugins.trac.wordpress.org/browser/wp-shortcode/trunk/wp-shortcode.php#L766
• https://plugins.trac.wordpress.org/browser/wp-shortcode/trunk/wp-shortcode.php#L774
• https://www.wordfence.com/threat-intel/vulnerabilities/id/6f3bcf70-2900-4a13-9ed4-264a15af9725?source=cve