What is CVE-2019-20490?

CVE-2019-20490 is a high-severity vulnerability in Cpanel. CVSS score: 8.8/10. Published 2020-03-17.

How severe is CVE-2019-20490?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Cpanel

CVE-2019-20490

cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).

Published 2020-03-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.011 (65.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Cpanel

References

documentation.cpanel.net/display/CL/82+Change+Log (Vendor Advisory)

Frequently asked questions

What is CVE-2019-20490?: CVE-2019-20490 is a high-severity vulnerability in Cpanel. CVSS score: 8.8/10. Published 2020-03-17.
How severe is CVE-2019-20490?: High severity. CVSS v3 base score is 8.8 out of 10.