CVE-2026-53769
mediumAvo is a framework to create admin panels for Ruby on Rails apps.
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_? 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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/avo-hq/avo/commit/de12070dbac0cb6a7e2bea357f9697f99e92554c security-advisories@github.com
- https://github.com/avo-hq/avo/pull/4520 security-advisories@github.com
- https://github.com/avo-hq/avo/releases/tag/v3.32.0 security-advisories@github.com
- https://github.com/avo-hq/avo/security/advisories/GHSA-pqpw-cvm4-8mv9 security-advisories@github.com
- https://github.com/avo-hq/avo/security/advisories/GHSA-pqpw-cvm4-8mv9 134c704f-9b21-4f2e-91b3-4a467353bcc0