What is CVE-2016-10835?

CVE-2016-10835 is a medium-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 4.3/10. Published 2019-08-01.

How severe is CVE-2016-10835?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Cpanel

CVE-2016-10835

cPanel before 55.9999.141 allows a POP/IMAP cPHulk bypass via account name munging (SEC-107).

Vulnerability class: Broken Authentication

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

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Cpanel

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

documentation.cpanel.net/display/CL/56+Change+Log (Release Notes, Vendor Advisory)

Frequently asked questions

What is CVE-2016-10835?: CVE-2016-10835 is a medium-severity vulnerability in Cpanel, classified under Improper Authentication. CVSS score: 4.3/10. Published 2019-08-01.
How severe is CVE-2016-10835?: Medium severity. CVSS v3 base score is 4.3 out of 10.