What is CVE-2018-20937?

CVE-2018-20937 is a medium-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 4.3/10. Published 2019-08-01.

How severe is CVE-2018-20937?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Cpanel

CVE-2018-20937

cPanel before 68.0.27 does not validate database and dbuser names during renames (SEC-321).

Vulnerability class: Broken Authentication

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (44.1th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

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

Frequently asked questions

What is CVE-2018-20937?: CVE-2018-20937 is a medium-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 4.3/10. Published 2019-08-01.
How severe is CVE-2018-20937?: Medium severity. CVSS v3 base score is 4.3 out of 10.