What’s Vulnerable › Vulnerabilities

CVE-2018-20899

• Severity: medium (CVSS 6.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-01 · updated 2026-06-17
• Weakness: CWE-79

Description

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

Affected products

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

How to fix

Upgrade to a fixed version: WebPros cPanel 62.0.47, 68.0.39, 70.0.43, 71.9980.37. Check the vendor advisory for mitigations.

References

• https://documentation.cpanel.net/display/CL/72+Change+Log
• https://news.cpanel.com/cpanel-tsr-2018-0003-full-disclosure/
• https://documentation.cpanel.net/display/CL/72+Change+Log

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