The CPO Companion WordPress plugin before 1.1.0 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 admins.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Cpo_companion | Machothemes | * | 1.1.0 (excluding) |