CVE-2026-3600

The Investi plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'investi-announcements-accordion' shortcode's 'maximum-num-years' attribute in all versions up to, and including, 1.0.26. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes. Specifically, the 'maximum-num-years' attribute value is read directly from shortcode attributes and interpolated into a double-quoted HTML attribute without any escaping (no esc_attr(), htmlspecialchars(), or similar). 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.

• CWE-79

• https://plugins.trac.wordpress.org/browser/investi/tags/1.0.22/includes/widgets.php#L14
• https://plugins.trac.wordpress.org/browser/investi/tags/1.0.22/includes/widgets.php#L7
• https://plugins.trac.wordpress.org/browser/investi/trunk/includes/widgets.php#L14
• https://plugins.trac.wordpress.org/browser/investi/trunk/includes/widgets.php#L7
• https://plugins.trac.wordpress.org/changeset/3486937/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/51aa0d86-e623-46d1-9d37-a36b4825c071?source=cve

Published

Apr 8, 2026

Last Modified

Jul 24, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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