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.
Metrics
Affected Vendors & Products
References
History
Wed, 09 Sep 2026 17:30:00 +0000
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| Metrics |
ssvc
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Mon, 07 Sep 2026 12:15:00 +0000
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| Weaknesses | CWE-639 | |
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threat_severity
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threat_severity
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Sat, 05 Sep 2026 02:15:00 +0000
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Avo Hq
Avo Hq avo |
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| Vendors & Products |
Avo Hq
Avo Hq avo |
Fri, 04 Sep 2026 20:30:00 +0000
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| 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. | |
| Title | Avo: Direct attachment upload endpoint lacks upload authorization and bypasses field-level upload policy | |
| Weaknesses | CWE-862 CWE-863 |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-04T20:02:01.456Z
Updated: 2026-09-09T15:57:27.231Z
Reserved: 2026-06-10T17:48:40.547Z
Link: CVE-2026-53769
Updated: 2026-09-09T15:57:01.209Z
Status : Received
Published: 2026-09-04T21:17:25.300
Modified: 2026-09-09T16:17:03.117
Link: CVE-2026-53769