CVE-2018-20859

MEDIUM 6.1CVE-2018-20859 · Published 30/07/2019 · updated 17/06/2026

In short

CVE-2018-20859 is a MEDIUM (CVSS 6.1) vulnerability affecting edx-platform (edx).
Chance of exploitation in the next 30 days (EPSS): 1.2%, higher than 68.2% of all vulnerabilities.
Fix: update to 2018-07-18 or later.

Package	Affected versions	Patched versions
edx-platform edx	`< 2018-07-18`	`2018-07-18`

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

Running one of these products? Scan your site to see whether it exposes a vulnerable version.