What is CVE-2017-18391?

CVE-2017-18391 is a low-severity vulnerability in Cpanel, classified under Information Disclosure. CVSS score: 2.5/10. Published 2019-08-02.

How severe is CVE-2017-18391?

Low severity. CVSS v3 base score is 2.5 out of 10.

Information disclosure in Cpanel

CVE-2017-18391

cPanel before 68.0.15 allows attackers to read backup files because they are world-readable during a short time interval (SEC-323).

Vulnerability class: Information Disclosure

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

CVSS v3 metric

CVSS v3 base score 2.5 (Low). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

documentation.cpanel.net/display/CL/68+Change+Log (Product, Release Notes)
forums.cpanel.net/threads/cpanel-tsr-2017-0006-full-disclosure.615839/ (Vendor Advisory)

Frequently asked questions

What is CVE-2017-18391?: CVE-2017-18391 is a low-severity vulnerability in Cpanel, classified under Information Disclosure. CVSS score: 2.5/10. Published 2019-08-02.
How severe is CVE-2017-18391?: Low severity. CVSS v3 base score is 2.5 out of 10.