Logo Showcase with Slick Slider < 1.2.4 - Author+ Stored Cross Site Scripting

2021-10-1900:00:00

apple502j

363

stored cross site scripting

author+

logo showcase

slick slider

http request

owasp zap

burp

shortcode

EPSS

0.001

Percentile

24.8%

JSON

The plugin does not sanitise the Grid Settings, which could allow users with a role as low as Author to perform stored Cross-Site Scripting attacks via post metadata of Grid logo showcase.

1) Create a Logo Showcase
2) Set display type to Logo Grid
3) Set number of grid to 1" style="animation-name:twentytwentyone-close-button-transition" onanimationend="alert(origin)//
NOTE: the 1 is important to avoid zero division error.
NOTE: there are Javascript protections which can be mitigated by intercepting the HTTP request in a tool like OWASP ZAP or Burp.
4) Add the showcase to a post using shortcode

EPSS

0.001

Percentile

24.8%

JSON

Related for WPEX-ID:5D70818E-730D-40C9-A2DB-652052A5FD5C