Script inserido no final das postagens do site wordpress é algum tipo de vírus por alguma falha em algum plugin

Estou com um problema no site e gostaria da ajuda dos colegas para poder solucionar a possível brecha de segurança no site.

Todas as postagens do site apareceram com um código estranho no final de cada uma delas.

O código é mostrado apenas dentro do editor classic do wordpress. Na página onde o post é listado o código não é mostrado

Abaixo segue o código inserido no final de cada uma das postagens do site.

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	Por favor, alguém sabe como esse código pode ter sido inserido por um invasor para que eu possa fechar a possível brecha no código?

	O site foi desenvolvido utilizano wordpress.

	Desde já agradeço a todos que puderem ou tentarem me ajudar a descobrir o que pode ter acontecido.