CVE-2018-20859: Edx Edx-Platform

Medium severity, CVSS 6.1. EPSS: 1.2% chance of exploitation in the next 30 days.

edx-platform before 2018-07-18 allows XSS via a response to a Chemical Equation advanced problem.

Affected products

• Edx Edx-Platform: before 2018-07-18 (fixed in 2018-07-18)

Published 2019-07-30. Last modified 2026-06-17.