Contextual Related Posts < 3.3.1 - Contributor+ Stored XSS

2023-01-1600:00:00

Lana Codes

166

stored xss

contributor+

contextual related posts

css classes

EPSS

0.001

Percentile

25.5%

JSON

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

1. Insert a "Contextual Related Posts" block, and give it the following additional CSS classes: " onmouseover="alert(1)" style="background:red;"

2. Hover over the block where it's inserted to trigger the XSS

EPSS

0.001

Percentile

25.5%

JSON

Related for WPEX-ID:5754A4FD-1ADF-47AA-976F-3B28750058C2