Vulnerabilities / Happierleads / WPSEC-2026-1135
Happierleads <= 1.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Client ID Setting
Medium 6.4
CWE-79Fixed in 3.1.0
- ID
- WPSEC-2026-1135
- Plugin
- Happierleads – Identify your B2B website visitors even if they work remotely (happierleads)
- Affected
- all versions before 3.1.0
- Remediation
- Update to 3.1.0 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions Low among sites WPSec scans, 2026-10-16
- Attack surface
- Happierleads on WPSec AttackSurface
- Fix released
- Published
Description
The Happierleads plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Client ID setting in all versions up to, and including, 1.0.1, due to the settings page being available to any user with the edit_posts capability and the stored Client ID being echoed into the input's value attribute without escaping (sanitize_text_field() does not encode quotes). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts that execute whenever a user, including an administrator, opens the plugin's settings page.
References
- https://wpsec.com/vuln/WPSEC-2026-1135/
- https://plugins.svn.wordpress.org/happierleads/tags/3.1.0/
- https://wordpress.org/plugins/happierleads/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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