CVE-2026-42205: CWE-284: Improper Access Control in avo-hq avo
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.
AI Analysis
Technical Summary
CVE-2026-42205 is a broken access control vulnerability in the avo framework's ActionsController. The insecure action lookup logic permits authenticated users to execute any descendant of Avo::BaseAction on any resource, regardless of whether the action is registered for that resource. This flaw enables privilege escalation and unauthorized data manipulation. The vulnerability affects avo versions prior to 3.31.2 and has been resolved in version 3.31.2.
Potential Impact
Exploitation of this vulnerability allows an authenticated user with limited privileges to perform unauthorized actions on any resource within the application, leading to privilege escalation and potential full compromise of data integrity and confidentiality. The CVSS score of 8.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade avo to version 3.31.2 or later, where this vulnerability has been patched. No other mitigation is indicated or required as the fix is available.
CVE-2026-42205: CWE-284: Improper Access Control in avo-hq avo
Description
Avo is a framework to create admin panels for Ruby on Rails apps. Prior to version 3.31.2, a broken access control vulnerability was identified in the ActionsController of the Avo framework. Due to insecure action lookup logic, an authenticated user can execute any Action class (descendants of Avo::BaseAction) on any resource, even if the action is not registered for that specific resource. This leads to Privilege Escalation and unauthorized data manipulation across the entire application. This issue has been patched in version 3.31.2.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-42205 is a broken access control vulnerability in the avo framework's ActionsController. The insecure action lookup logic permits authenticated users to execute any descendant of Avo::BaseAction on any resource, regardless of whether the action is registered for that resource. This flaw enables privilege escalation and unauthorized data manipulation. The vulnerability affects avo versions prior to 3.31.2 and has been resolved in version 3.31.2.
Potential Impact
Exploitation of this vulnerability allows an authenticated user with limited privileges to perform unauthorized actions on any resource within the application, leading to privilege escalation and potential full compromise of data integrity and confidentiality. The CVSS score of 8.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade avo to version 3.31.2 or later, where this vulnerability has been patched. No other mitigation is indicated or required as the fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-25T05:04:37.027Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69fe575bcbff5d86102f6124
Added to database: 5/8/2026, 9:36:27 PM
Last enriched: 5/8/2026, 9:51:18 PM
Last updated: 5/9/2026, 1:59:22 AM
Views: 15
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