WPFunnels <= 3.12.7 - Unauthenticated Remote Code Execution via 'postData' Parameter
The WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 3.12.7 via the 'postData' parameter parameter. This is due to unsanitized write of attacker-controlled postData values into a PHP-includeable .log file combined with the use of include_once to render that file in wpfnl_show_log. This makes it possible for unauthenticated attackers to execute code on the server. Exploitation requires that the Log Settings "Enable Logs" toggle is on and that an administrator subsequently opens the polluted log file via the plugin's Log Settings View UI; however, the nonce required to reach the optin endpoint is publicly emitted on every funnel step page, so the injection step itself is fully unauthenticated.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell | <= 3.12.7 | 3.12.8 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434- Platform
- WordPress
- Package
WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell- Disclosed
- 06.07.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
Wordfence Intelligence - 5d84d749-0ab5-49dd-8e4f-45681f197742 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 26
- First → latest
- 12.2022 10.2026
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 2
- Medium 22
Disclosures per year
- 2022: 2
- 2023: 3
- 2024: 2
- 2025: 5
- 2026: 14
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WPFunnels <= 3.12.7 - Unauthenticated Remote Code Execution via 'postData' Parameter this entry
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