CVE-2018-20899: cPanel

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

cPanel before 71.9980.37 allows stored XSS in the WHM cPAddons installation interface (SEC-398).

Affected products

• cPanel cPanel: from 61.9999.55, before 62.0.47 (fixed in 62.0.47); from 67.9999.64, before 68.0.39 (fixed in 68.0.39); from 69.9999.122, before 70.0.43 (fixed in 70.0.43); from 71.9980.30, before 71.9980.37 (fixed in 71.9980.37)

Published 2019-08-01. Last modified 2026-06-17.