CVE-2026-109870 · Package
NO FIX YET · SEE WHAT TO DO
The User Registration & Membership WordPress plugin does not check that a discount coupon applies to the paid plan being bought. A fully discounted order is then treated as paid, so an unauthenticated visitor can be given the role tied to that plan without paying, which can reach administrator when a plan maps to an admin role.
first public Nov 11, 2026 · 1 source
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Sites running the User Registration & Membership WordPress plugin before 5.3.2 that sell paid membership plans with discount coupons open to the public. The risk is highest where a paid plan maps to an administrator or other privileged role. Sites without paid plans or coupon-based discounts may not be exposed, but the sources do not confirm the exact conditions.
Not affected if no-paid-membership-plans, no-privileged-role-mapped, plugin-version-5.3.2-or-later
Who cares membership-sites, user-registration-plugin, wordpress
user-registration/user-registration.php.5.3.2 or later (per the description, versions before 5.3.2 are affected).The User Registration & Membership WordPress plugin before 5.3.2 does not verify that a discount coupon applied to a paid membership plan is actually valid for that plan before treating a fully discounted order as paid, allowing unauthenticated users to be granted the role mapped to a paid plan without paying for it, which can lead to privilege escalation up to administrator where a plan is mapped to a privileged role.
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