CVE WatchSep 4, 2026

CVE-2026-53769

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's direct attachment uplo

CVSS

6.5

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 4, 2026 · Last modified: Sep 4, 2026 · CWE-862 · CWE-863

EPSS · 30d

Not enough EPSS history yet.

Technical description

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'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_<field>? 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.

Official references

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