XSS in Cpanel

CVE-2018-20911

cPanel before 70.0.23 allows code execution because "." is in @INC during a Perl syntax check of cpaddonsup (SEC-359).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.016 (73.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Cpanel
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2018-20911?: CVE-2018-20911 is a high-severity vulnerability in Cpanel, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2019-08-01.
How severe is CVE-2018-20911?: High severity. CVSS v3 base score is 7.2 out of 10.