Medium severity6.4NVD Advisory· Published Sep 19, 2026· Updated Sep 21, 2026
CVE-2026-1256
CVE-2026-1256
Description
The YS LeadGen plugin for WordPress is vulnerable to authorization bypass and Stored Cross-Site Scripting via multiple AJAX endpoints in all versions up to, and including, 2.1.4 due to missing capability checks on popup management actions. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create arbitrary popups and inject malicious JavaScript that executes when the popup is displayed, leading to Stored XSS.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1- Range: <=2.1.4
Patches
Vulnerability mechanics
References
5- plugins.trac.wordpress.org/browser/ysleadgen/tags/1.1.1/app/Controllers/Ajax.phpnvd
- plugins.trac.wordpress.org/browser/ysleadgen/tags/1.1.1/app/Controllers/Ajax.phpnvd
- plugins.trac.wordpress.org/browser/ysleadgen/tags/1.1.1/app/Controllers/Ajax.phpnvd
- plugins.trac.wordpress.org/changeset/3577391nvd
- www.wordfence.com/threat-intel/vulnerabilities/id/b62b8619-4348-4cf7-a572-aa6df20bdc3anvd
News mentions
1- Wordfence Intelligence Weekly WordPress Vulnerability Report (September 14, 2026 to September 20, 2026)Wordfence Blog · Sep 24, 2026