What’s Vulnerable › Vulnerabilities

CVE-2019-20493

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-17 · updated 2026-06-17
• Weakness: CWE-79

Description

cPanel before 82.0.18 allows self-XSS because JSON string escaping is mishandled (SEC-520).

Affected products

• WebPros cPanel: from 77.9999.110 before 78.0.43; from 81.9999.242 before 82.0.18; from 83.9999.115 before 84.0.10 — fixed in 78.0.43, 82.0.18, 84.0.10

How to fix

Upgrade to a fixed version: WebPros cPanel 78.0.43, 82.0.18, 84.0.10. Check the vendor advisory for mitigations.

References

• https://documentation.cpanel.net/display/CL/82+Change+Log
• https://documentation.cpanel.net/display/CL/82+Change+Log

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