Chart.js for WordPress <= 2023.2 - Editor+ Stored Cross-Site Scripting

2024-01-1900:00:00

Asif Nawaz Minhas & Sergen Koç

wordpress

chart.js

xss

font family

cross-site scripting

AI Score

7.9

Confidence

High

EPSS

Percentile

9.0%

JSON

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

1. Go to "Charts > Settings".
2. For the Font Family, enter the payload: `</script>">//<SCRIPT>alert("XSS");</SCRIPT>.
3. Click on save and visit any page on the site to see the XSS.

References

lynk.nl/