CVE-2026-15103 WPFunnels <= 3.12.8 - Authenticated (Funnel Manager+) Privilege Escalation via 'group_id' Path Parameter
Authenticated users with Funnel Manager capabilities can escalate privileges to administrator by manipulating the group_id parameter to update user roles.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15103?
CVE-2026-15103 is a high-severity vulnerability in getwpfunnels WPFunnels – Funnel Builder for WooCommerce with Checkout & One Click Upsell, published on 16 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-269
Which versions are affected by CVE-2026-15103?
How do I fix CVE-2026-15103?
No fix has been published for CVE-2026-15103 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15103 being exploited?
There is no known exploitation of CVE-2026-15103 in the wild and no public exploit code.
Sources
Also known as GHSA-qq4q-jv8x-6fjm.