CVE-2018-20899

Name: CVE-2018-20899
Creator: NVD / NIST
Published: 2019-08-01T14:15:12.97+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.65%

Last modified Jun 17, 2026

CVE-2018-20899 is a vulnerability of currently unknown severity. cPanel before 71.9980.37 allows stored XSS in the WHM cPAddons installation interface (SEC-398).. EPSS estimates a 0.65% chance of exploitation in the next 30 days.

Description

cPanel before 71.9980.37 allows stored XSS in the WHM cPAddons installation interface (SEC-398).

Metrics

EPSS Probability

0.65%

46.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Cpanel	Cpanel	>= 61.9999.55, < 62.0.47
Cpanel	Cpanel	>= 67.9999.64, < 68.0.39
Cpanel	Cpanel	>= 69.9999.122, < 70.0.43
Cpanel	Cpanel	>= 71.9980.30, < 71.9980.37

References

https://documentation.cpanel.net/display/CL/72+Change+LogProduct, Release Notes
https://news.cpanel.com/cpanel-tsr-2018-0003-full-disclosure/Vendor Advisory
https://documentation.cpanel.net/display/CL/72+Change+LogProduct, Release Notes

Timeline

Published: Aug 1, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20899?

cPanel before 71.9980.37 allows stored XSS in the WHM cPAddons installation interface (SEC-398).

How severe is CVE-2018-20899?

Severity scoring for CVE-2018-20899 is pending analysis. The EPSS model estimates a 0.65% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20899?

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-2018-20899?

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

Scan your code now

Source: NVD / NIST