Quick answers
- Is CVE-2026-109447 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-109447 being exploited in the wild.
- How severe is CVE-2026-109447?
- High severity, with a CVSS score of 8.1, published 16 October 2026.
- Which products and versions are affected?
- Cozmoslabs User Profile Builder up to and including 4.0.3.
- Is there a fix for CVE-2026-109447?
- No fixed version is recorded yet. Disable user registration or email confirmation until a patched version is applied. Alternatively, remove any legacy form fields with meta-name `role` from the plugin configuration. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-109447 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-109447?
- Check whether you run Cozmoslabs User Profile Builder at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
Disable user registration or email confirmation until a patched version is applied. Alternatively, remove any legacy form fields with meta-name `role` from the plugin configuration.
Technical details
The plugin's activation handler in `wppb_add_meta_to_user_on_activation()` passes attacker-supplied role values directly to `WP_User::set_role()` without validation. A reserved-name check in version 4.0.3 incorrectly exempts pre-existing form fields, allowing a legacy field with meta-name `role` to persist and bridge attacker input into the signup record. An unauthenticated attacker can submit `role=administrator` via the public registration form and activate as an admin through the confirmation link.
Affected products
- Cozmoslabs User Profile Builder up to and including 4.0.3
Timeline
- 2026-10-16: disclosed