Stored cross-site scripting in Hustle plugin via module title
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
The Hustle plugin for WordPress by wpmudev is affected in all versions up to and including 7.8.14.3. Insufficient input sanitization and output escaping of the module content title leads to stored cross-site scripting (CWE-79). An authenticated attacker with a custom role granted the Create and Update Modules capability can inject scripts that run whenever a user opens an affected page. This capability must be granted explicitly and is not enabled by default.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version is listed for Hustle, and no mitigation is given for this flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Timeline
- 2026-10-28 Threatist record created from CVE-2026-107710
- 2026-10-28 Alias added: GHSA-w4w7-h5xv-23gr
- 2026-10-28 CISA SSVC decision points changed
- 2026-10-28 Priority changed: MEDIUM → LOW
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a3ed1a2a-f9d5-4f34-8a8e-583ea7226df8?source=cve
- https://plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.3/inc/front/hustle-module-renderer.php#L181
- https://plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.3/inc/front/hustle-module-renderer.php#L163
- https://plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.3/inc/hustle-module-model.php#L569
- https://plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.3/inc/hustle-modules-common-admin-ajax.php#L49
- https://plugins.trac.wordpress.org/browser/wordpress-popup/tags/7.8.14.3/inc/front/hustle-module-front.php#L917
- https://plugins.trac.wordpress.org/changeset/3758337/wordpress-popup/trunk/inc/front/hustle-module-renderer.php
More wpmudev vulnerabilities
- TI-2023-04240 Forminator <= 1.24.6 - Unauthenticated Arbitrary File Upload CVSS 3.1CRITICAL 9.8
- TI-2023-04683 Defender Security < 4.1.0 - Protection Bypass (Hidden Login Page) CVSS 3.1MEDIUM 5.3
- TI-2026-13248 Forminator Forms <= 1.56.1 - Unauthenticated Arbitrary File Upload via Forged Upload Field Configuration CVSS 3.1CRITICAL 9.8
- TI-2025-05864 Forminator Forms – Contact Form, Payment Form & Custom Form Builder <= 1.44.2… CVSS 3.1HIGH 8.8
- TI-2024-20466 SQL injection in wpmudev Forminator CVSS 3.1HIGH 7.2
- TI-2024-07873 Hustle < 7.8.5 - Admin+ Stored XSS CVSS 3.1MEDIUM 4.8
Sources
- CVE-2026-107710 · CVE Program
- CVE-2026-107710 · NVD
- FIRST EPSS
- GHSA-w4w7-h5xv-23gr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences