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      <title>CVE-2026-53769 — Avo: Direct attachment upload endpoint lacks upload authorization and bypasses field-level upload policy</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-53769</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; avo-hq avo&lt;/p&gt;
&lt;p&gt;Avo is a framework to create admin panels for Ruby on Rails apps. From version 2.28.0 to before version 3.32.0, Avo&amp;#39;s direct attachment upload endpoint lacks server-side upload authorization and bypasses the documented field-level upload policy methods such as upload_{FIELD_ID}?. An authenticated Avo user who can reach the Avo attachment upload endpoint can replace or add attachment content, including binary content, filename, and content-type metadata, on a resolved record even when both update? and upload_&amp;lt;field&amp;gt;? policies deny the operation. This primarily affects multi-role Avo Pro/Advanced-style deployments where non-administrator or restricted operator users can reach Avo and per-record or per-field operations are expected to be enforced by policies. This issue has been patched in version 3.32.0.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; avo-hq avo&lt;/p&gt;
&lt;p&gt;Avo is a framework to create admin panels for Ruby on Rails apps. From version 2.28.0 to before version 3.32.0, Avo&amp;#39;s direct attachment upload endpoint lacks server-side upload authorization and bypasses the documented field-level upload policy methods such as upload_{FIELD_ID}?. An authenticated Avo user who can reach the Avo attachment upload endpoint can replace or add attachment content, including binary content, filename, and content-type metadata, on a resolved record even when both update? and upload_&amp;lt;field&amp;gt;? policies deny the operation. This primarily affects multi-role Avo Pro/Advanced-style deployments where non-administrator or restricted operator users can reach Avo and per-record or per-field operations are expected to be enforced by policies. This issue has been patched in version 3.32.0.&lt;/p&gt;</content:encoded>
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