What is CVE-2018-20864?

CVE-2018-20864 is a medium-severity vulnerability in Cpanel, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2019-07-30.

How severe is CVE-2018-20864?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in Cpanel

CVE-2018-20864

cPanel before 76.0.8 allows a persistent Virtual FTP accounts after removal of its associated domain (SEC-454).

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2019-07-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

documentation.cpanel.net/display/CL/76+Change+Log (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2018-20864?: CVE-2018-20864 is a medium-severity vulnerability in Cpanel, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2019-07-30.
How severe is CVE-2018-20864?: Medium severity. CVSS v3 base score is 6.5 out of 10.