What’s Vulnerable › Vulnerabilities

CVE-2018-20921

• 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 70.0.23 allows stored XSS via a WHM "Delete a DNS Zone" action (SEC-375).

Affected products

• WebPros cPanel: before 70.0.23 — fixed in 70.0.23

How to fix

Upgrade to a fixed version: WebPros cPanel 70.0.23. Check the vendor advisory for mitigations.

References

• https://documentation.cpanel.net/display/CL/70+Change+Log
• https://documentation.cpanel.net/display/CL/70+Change+Log

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