What’s Vulnerable › Vulnerabilities

CVE-2017-18403

• Severity: medium (CVSS 6.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-08-02 · updated 2026-06-17
• Weakness: CWE-284

Description

cPanel before 68.0.15 allows code execution in the context of the nobody account via Mailman archives (SEC-337).

Affected products

• WebPros cPanel: from 61.9999.55 before 62.0.35; from 63.9999.74 before 64.0.42; from 65.9999.38 before 66.0.34; from 67.9999.64 before 68.0.15 — fixed in 62.0.35, 64.0.42, 66.0.34, 68.0.15

How to fix

Upgrade to a fixed version: WebPros cPanel 62.0.35, 64.0.42, 66.0.34, 68.0.15. Check the vendor advisory for mitigations.

References

• https://documentation.cpanel.net/display/CL/68+Change+Log
• https://news.cpanel.com/cpanel-tsr-2017-0006-full-disclosure/
• https://documentation.cpanel.net/display/CL/68+Change+Log

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