CVE-2026-3600
Investi <= 1.0.26 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'maximum-num-years' Shortcode Attribute
- State
- Published
- Severity
- 6.4 Medium
- Published
- Apr 8, 2026
- Updated
- Apr 8, 2026
- Reserved
- Mar 5, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N | Wordfence |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
Investiinvesti |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/51aa0d86-e623-46d1-9d37-a36b4825c071?source=cve
- https://plugins.trac.wordpress.org/browser/investi/trunk/includes/widgets.php#L14
- https://plugins.trac.wordpress.org/browser/investi/tags/1.0.22/includes/widgets.php#L14
- https://plugins.trac.wordpress.org/browser/investi/trunk/includes/widgets.php#L7
- https://plugins.trac.wordpress.org/browser/investi/tags/1.0.22/includes/widgets.php#L7
- https://plugins.trac.wordpress.org/changeset/3486937/
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