Authorization Bypass Vulnerability in Avo Framework for Ruby on Rails Applications

CVE-2026-53769

What is CVE-2026-53769?

The Avo framework, utilized for creating admin panels in Ruby on Rails applications, contains a significant vulnerability in its attachment upload endpoint. Versions 2.28.0 through just before 3.32.0 lack proper server-side authorization checks, allowing authenticated users to manipulate attachment content such as binaries, filenames, and metadata unfairly. This flaw poses a risk particularly for environments with multiple user roles, where access policies are essential for securing per-record or per-field updates. The vulnerability has been addressed in version 3.32.0, underlining the importance of updating to safeguard applications.

References