CVE-2026-15103
WPFunnels <= 3.12.8 - Authenticated (Funnel Manager+) Privilege Escalation via 'group_id' Path Parameter
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Weakness
Affected products
References (6)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/76ad6d21-f277-496f-aa6b-f9d5cb8a3801?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.8/includes/core/rest-api/Controllers/class-settings-controller.php#L462 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.8/includes/core/rest-api/Controllers/class-settings-controller.php#L66 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.8/includes/core/rest-api/Controllers/class-settings-controller.php#L40 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/wpfunnels/tags/3.12.8/includes/utils/class-wpfnl-functions.php#L1216 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3607181%40wpfunnels&new=3607181%40wpfunnels (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-15103)Record last updated .