What is CVE-2018-20952?

CVE-2018-20952 is a medium-severity vulnerability in Cpanel, classified under Information Disclosure. CVSS score: 6.5/10. Published 2019-08-01.

How severe is CVE-2018-20952?

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

Information disclosure in Cpanel

CVE-2018-20952

cPanel before 68.0.27 creates world-readable files during use of WHM Apache Includes Editor (SEC-388).

Vulnerability class: Information Disclosure

Published 2019-08-01 · last modified 2026-06-17.

CVSS v3 metric

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

EPSS exploit prediction

EPSS: 0.009 (57.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

documentation.cpanel.net/display/CL/68+Change+Log (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2018-20952?: CVE-2018-20952 is a medium-severity vulnerability in Cpanel, classified under Information Disclosure. CVSS score: 6.5/10. Published 2019-08-01.
How severe is CVE-2018-20952?: Medium severity. CVSS v3 base score is 6.5 out of 10.