The WP Go Maps (formerly WP Google Maps) plugin for WordPress is vulnerable to Cache Poisoning in all versions up to, and including, 9.0.48. This is due to the plugin not serving cached data from server-side responses and instead relying on user-input. This makes it possible for unauthenticated attackers to poison the cache location for location search results.
The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted.