CVE-2026-5717

Description

The VI: Include Post By plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class_container' attribute of the 'include-post-by-cat' shortcode in all versions up to, and including, 0.4.200706 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.

References

• https://plugins.trac.wordpress.org/browser/vi-include-post-by/tags/0.4.200706/vi_include_post_by.php#L809
• https://plugins.trac.wordpress.org/browser/vi-include-post-by/trunk/vi_include_post_by.php#L809
• https://www.wordfence.com/threat-intel/vulnerabilities/id/b3e95dc2-0f50-4009-9cc0-a02f9977ce58?source=cve