Bootstrap Shortcodes <= 3.4.0 - Contributor+ Stored XSS via Shortcode

2023-01-2600:00:00

Lana Codes

172

bootstrap shortcodes

contributor+ role

stored xss

shortcode

admin review

payload delivery

EPSS

0.001

Percentile

25.5%

JSON

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

As a Contributor+ create a new post and add the following shortcode.

[bs_well size='" onmouseover="alert(1)" style="background:red;width:100px;height:100px;"']

Save it to be reviewed.
When an admin reviews the post and moves the mouse over the added code, the payload will be delivered.

EPSS

0.001

Percentile

25.5%

JSON

Related for WPEX-ID:B4C53BEF-E868-46F1-965D-720B5B9A931E