WPFunnels <= 3.12.8 - Authenticated (Funnel Manager+) Privilege Escalation via 'group_id' Path Parameter
The WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell plugin for WordPress is vulnerable to Privilege Escalation via arbitrary option update in all versions up to, and including, 3.12.8. This is due to the update_settings() REST callback failing to validate the group_id path parameter against an allowlist of permitted option names before passing it directly to get_option() and update_option(), allowing the built-in wp_user_roles option — which satisfies the route's loose [\w-]+ regex — to be targeted. This makes it possible for authenticated attackers with the wpf_manage_funnels capability and above to elevate their privileges to administrator by writing a crafted role definition containing arbitrary capabilities into the wp_user_roles option, thereby granting any WordPress role full site administrator access. The wpf_manage_funnels capability is typically assigned to the Funnel Manager custom role created by the plugin, meaning this role is the minimum required to exploit the vulnerability.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell | <= 3.12.8 | 3.12.9 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-269- Platform
- WordPress
- Package
WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell- Disclosed
- 15.07.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
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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 <= 3.12.8 - Authenticated (Funnel Manager+) Privilege Escalation via 'group_id' Path Parameter this entry
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