Simple File Downloader <= 1.0.4 - Contributor+ Stored XSS via Shortcode

2023-01-2500:00:00

Lana Codes

214

file downloader

contributor+

stored xss

shortcode

admin

payload

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.

[media-downloader media_id='1' class='" onmouseover="alert(/XSS/)"']

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:788C6AA2-14CC-411F-95E8-5994F8C82D70