What is CVE-2017-18423?

CVE-2017-18423 is a low-severity vulnerability in Cpanel, classified under Insertion of Sensitive Information into Log File. CVSS score: 3.3/10. Published 2019-08-02.

How severe is CVE-2017-18423?

Low severity. CVSS v3 base score is 3.3 out of 10.

Information disclosure in Cpanel

CVE-2017-18423

In cPanel before 66.0.2, domain log files become readable after log processing (SEC-273).

Published 2019-08-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.3 (Low). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.004 (27.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-532 — Insertion of Sensitive Information into Log File

References

documentation.cpanel.net/display/CL/66+Change+Log (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2017-18423?: CVE-2017-18423 is a low-severity vulnerability in Cpanel, classified under Insertion of Sensitive Information into Log File. CVSS score: 3.3/10. Published 2019-08-02.
How severe is CVE-2017-18423?: Low severity. CVSS v3 base score is 3.3 out of 10.