What is CVE-2016-9022?

CVE-2016-9022 is a critical-severity vulnerability in Exponentcms Exponent Cms, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-12-31.

How severe is CVE-2016-9022?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Improper input validation in Exponentcms Exponent Cms

CVE-2016-9022

Exponent CMS before 2.6.0 has improper input validation in usersController.php.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2020-12-31 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (69.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.1% 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

Exponentcms Exponent Cms

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

github.com/exponentcms/exponent-cms/commit/a8efd9ca71fc9b8b843ad0910d435d237482… (Patch, Third Party Advisory)
exponentcms.lighthouseapp.com/projects/61783/changesets/a8efd9ca71fc9b8b843ad09… (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2016-9022?: CVE-2016-9022 is a critical-severity vulnerability in Exponentcms Exponent Cms, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-12-31.
How severe is CVE-2016-9022?: Critical severity. CVSS v3 base score is 9.8 out of 10.