CVE-2026-9635

WP Shortcode by MyThemeShop <= 1.4.17 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'title' Shortcode Attribute

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.

We have discovered 288 live websites that are affected by CVE-2026-9635.

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Affected Software

Product  Wp Shortcode
Category Wordpress Plugins
Vulnerable Domains288 live websites (96% of Wp Shortcode install base)
Vulnerable Versions
  • from 0 through 1.4.17
Vulnerable Versions Count2 versions ( 40% of all versions)


Common Weakness Enumeration

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')



Details

  • Published - Jul 23, 2026
  • Updated - Jul 23, 2026

Credits

  • Muhammad Yudha - DJ (finder)

Website Distribution by Country

Number of websites using CVE-2026-9635
United States116 websites


Germany29 websites
France24 websites
GB11 websites
Russia8 websites
Vietnam8 websites
Italy6 websites
Netherlands6 websites
Canada6 websites
Denmark6 websites

Website Distribution by TLD

Number of websites using CVE-2026-9635
.com136 websites
.de23 websites
.org21 websites
.fr10 websites
.net8 websites
.info7 websites
.ru6 websites
.it5 websites
.co.uk5 websites
.nl4 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-9635

Top websites that are affected by CVE-2026-9635. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
********.com Thailand**,***
**********************.com United States***,***
*********.com Indonesia***,***
*********.com United States***,***
*******.com United States***,***
***********.com United States***,***
****.****.com United States***,***
****************.info United States***,***
***********************.info United States***,***
*******.com Iran***,***
See full domain list

FAQ

CVE-2026-9635 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Wp Shortcode
A total of 288 websites have been identified as vulnerable to CVE-2026-9635, based on global website indexing conducted by WebTechSurvey.
The Wp Shortcode is affected by the CVE-2026-9635 vulnerability.
Wp Shortcode versions up to and including 1.4.17 are vulnerable to CVE-2026-9635.