The Simple Membership WordPress plugin before 4.2.2 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admin.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Simple_membership | Simple-membership-plugin | * | 4.2.2 (excluding) |