CVE-2019-20490

Name: CVE-2019-20490
Creator: NVD / NIST
Published: 2020-03-17T15:15:12.8+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.13%

Last modified Jun 17, 2026

CVE-2019-20490 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. cPanel before 82.0.18 allows authentication bypass because webmail usernames are processed inconsistently (SEC-499).. EPSS estimates a 1.13% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.13%

62.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cpanel	Cpanel	>= 77.9999.110, < 78.0.43
Cpanel	Cpanel	>= 81.9999.242, < 82.0.18
Cpanel	Cpanel	>= 83.9999.115, < 84.0.10

References

https://documentation.cpanel.net/display/CL/82+Change+LogVendor Advisory
https://documentation.cpanel.net/display/CL/82+Change+LogVendor Advisory

Timeline

Published: Mar 17, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20490?

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

How severe is CVE-2019-20490?

CVE-2019-20490 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20490?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20490?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST