The Location Weather plugin for WordPress is vulnerable to unauthorized modification of data due to missing capability checks on the splw_update_block_options() and lwp_clean_weather_transients() functions in all versions up to, and including, 3.0.2. This makes it possible for authenticated attackers, with Contributor-level access and above, to disable all weather blocks and purge all weather cache transients. The nonce required for these actions is exposed to all authenticated users via wp_localize_script() on the init hook.