Vulnerability in Exponentcms Exponent Cms
CVE-2016-9182
Exponent CMS 2.4 uses PHP reflection to call a method of a controller class, and then uses the method name to check user permission. But, the method name in PHP reflection is case insensitive, and Exponent CMS permits undefined actions to execute by default, so an attacker can use a capitalized method name to bypass the permission check, e.g., controller=expHTMLEditor&action=preview&editor=ckeditor and controller=expHTMLEditor&action=Preview&editor=ckeditor. An anonymous user will be rejected for the former but can access the latter.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.014 (71.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Exponentcms Exponent Cms — versions 2.4.0
Weakness classification (CWE)
References
- www.securityfocus.com/bid/94227 (Third Party Advisory, vdb-entry)
- github.com/exponentcms/exponent-cms/commit/684d79424f768db8bb345d5c68aa2a886239… (Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-9182?
- CVE-2016-9182 is a high-severity vulnerability in Exponentcms Exponent Cms, classified under Improper Access Control. CVSS score: 7.5/10. Published 2016-11-04.
- How severe is CVE-2016-9182?
- High severity. CVSS v3 base score is 7.5 out of 10.