Description
The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content[title]' parameter in all versions up to, and including, 7.8.14.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with custom-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that an administrator has explicitly granted the 'Create and Update Modules' (hustle_create / hustle_edit_module) capability to the attacker's role via the plugin's own Settings → Permissions feature; this delegation is not enabled by default.
References7
- plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.…
- plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.…
- plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.…
- plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.…
- plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.…
- plugins.trac.wordpress.org/changeset/3758337/wordpress-popup/tr…
- www.wordfence.com/threat-intel/vulnerabilities/id/a3ed1a2a-f9d5…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 10 · as of 2 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.