Numerous Plugins and Themes from the AccessPress Themes (aka Access Keys) vendor are backdoored due to their website being compromised. Only plugins and themes downloaded via the vendor website are affected, and those hosted on wordpress.org are not. However, all of them were updated or removed to avoid any confusion

Unvalidated input in the AccessPress Social Icons plugin, versions before 1.8.1, did not sanitise its widget attribute, allowing accounts with post permission, such as author, to perform SQL injections.