High severity8.8NVD Advisory· Published Aug 30, 2026· Updated Aug 31, 2026
CVE-2026-81660
CVE-2026-81660
Description
The Groundhogg — CRM, Newsletters, and Marketing Automation WordPress plugin before 4.5.13 does not validate or escape values submitted to some optional web form fields before storing them and outputting them back in an administrative area, allowing unauthenticated users to perform Stored Cross-Site Scripting attacks against high privilege users.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
1News mentions
2- Wordfence Intelligence Weekly WordPress Vulnerability Report (August 31, 2026 to September 6, 2026)Wordfence Blog · Sep 10, 2026
- WordPress Plugins: 25 Vulnerabilities Disclosed, Including Critical Auth Bypass and RCE FlawsVypr Intelligence · Aug 30, 2026