Simple Blog Card < 1.31 - Contributor+ Stored XSS via Shortcode

Description The plugin does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

PoC

As a contributor, put the following shortcode in a post [simpleblogcard url=“http://**./” color=‘red;" onmouseover=“alert(/XSS/)”’] Other affected attributes: color, color_width, t_line_height, d_line_height