Incorrect Authorization Affecting avo package, versions >=2.28.0, <3.32.0>=4.0.0.beta.1, <4.0.0.beta.41
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published10 Jul 2026
- disclosed9 Jul 2026
- creditUnknown
Introduced: 9 Jul 2026
CVE-2026-53769 (opens in a new tab)How to fix?
Upgrade avo to version 3.32.0, 4.0.0.beta.41 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the Avo::AttachmentsController#create process. An attacker can modify or replace attachment content, including binary data, filename, and content-type metadata, by directly accessing the upload endpoint and bypassing field-level and record-level authorization policies. This is only exploitable if the deployment allows authenticated users with restricted roles to access the upload endpoint while relying on per-record or per-field policies to restrict such actions.
Workaround
This vulnerability can be mitigated by overriding or monkey-patching the Avo::AttachmentsController#create process to enforce upload authorization before blob creation.