What’s Vulnerable › Vulnerabilities

CVE-2016-9182

• Severity: high (CVSS 7.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-11-04 · updated 2026-06-17
• Weakness: CWE-284

Description

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.

Affected products

• Exponent CMS: 2.4.0

References

• http://www.securityfocus.com/bid/94227
• https://github.com/exponentcms/exponent-cms/commit/684d79424f768db8bb345d5c68aa2a886239492b
• http://www.securityfocus.com/bid/94227
• https://github.com/exponentcms/exponent-cms/commit/684d79424f768db8bb345d5c68aa2a886239492b

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