Authorization Bypass Through User-Controlled Key Affecting avo package, versions <3.31.1
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- published27 Apr 2026
- disclosed19 Apr 2026
- creditIllunight
Introduced: 19 Apr 2026
NewCVE-2026-42205 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade avo to version 3.31.1 or higher.
Overview
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key in the action_class() function in the ActionsController. A user can gain unauthorized access to sensitive actions and escalate privileges by invoking unregistered action classes on arbitrary resources (every member of Avo::BaseAction.descendants), even if the actions is not registered for that resource.