Broken Access Control in Avo Framework for Ruby on Rails Applications
CVE-2026-42205

8.8HIGH

Key Information:

Vendor

Avo-hq

Status
Avo
Vendor
CVE Published:
8 May 2026

What is CVE-2026-42205?

The Avo framework for Ruby on Rails applications suffers from a broken access control vulnerability in its ActionsController. This flaw arises from insecure action lookup logic that permits authenticated users to trigger any Action class (inheritors of Avo::BaseAction) on any resource, regardless of whether the action is intended for that specific resource. Consequently, this can facilitate privilege escalation and unwanted data manipulation throughout the application. The issue has been addressed in version 3.31.2.

Affected Version(s)

avo < 3.31.2

References

https://github.com/avo-hq/avo/security/advisories/GHSA-qc...
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https://github.com/avo-hq/avo/releases/tag/v3.31.2
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CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.