ActiveCampaign < 8.1.12 - Contributor+ Stored XSS

2023-04-2000:00:00

Lana Codes

activecampaign

version 8.1.12

contributor+

stored xss

ac forms" gutenberg block

payload

additional css class

advanced settings

exploit

0.001 Low

EPSS

Percentile

23.7%

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

As a contributor, add a "AC Forms" Gutenberg block to a post dn put the following payload in the "Additional CSS class(es)" advanced settings of the block:

" onmouseover="alert(/XSS/)" style="background:red;width:100px;height:100px;"

The XSS will be triggered when viewing/previewing the post and moving the mouse over the red block

Note: There is no need to connect Active Campaign to confirm the exploit.

0.001 Low

EPSS

Percentile

23.7%

JSON

Related for WPEX-ID:E95C85FD-FA47-45BD-B8E0-A7F33EDD7130