What is CVE-2016-10826?

CVE-2016-10826 is a high-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 8.8/10. Published 2019-08-01.

How severe is CVE-2016-10826?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Cpanel

CVE-2016-10826

cPanel before 55.9999.141 allows attackers to bypass Two Factor Authentication via DNS clustering requests (SEC-93).

Vulnerability class: Broken Authentication

Published 2019-08-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

documentation.cpanel.net/display/CL/56+Change+Log (Product, Release Notes)
news.cpanel.com/cpanel-tsr-2016-0002-full-disclosure/ (Vendor Advisory)

Frequently asked questions

What is CVE-2016-10826?: CVE-2016-10826 is a high-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 8.8/10. Published 2019-08-01.
How severe is CVE-2016-10826?: High severity. CVSS v3 base score is 8.8 out of 10.