CVE-2026-53769

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Source
https://cve.org/CVERecord?id=CVE-2026-53769
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53769.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-53769
Aliases
Published
2026-09-04T20:02:01.456Z
Modified
2026-09-06T03:46:07.916313627Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Avo: Direct attachment upload endpoint lacks upload authorization and bypasses field-level upload policy
Details

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_{FIELDID}?. 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.

Database specific 
{
    "cwe_ids": [
        "CWE-862",
        "CWE-863"
    ],
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53769.json"
}
References

Affected packages

Git / github.com/avo-hq/avo

Affected ranges

Type
GIT
Repo
https://github.com/avo-hq/avo
Events
Introduced
39f6f8e1d24247749fdad1e1d1be13323f09f7c7
Fixed
2aa06624ef6cf7bfd6657cf5b25a2afab29e189d
Database specific
Show details 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "2.28.0"
        },
        {
            "fixed": "3.32.0"
        }
    ]
}

Affected versions

v2.*
v2.28.0
v2.29.0
v2.29.1
v2.30.0
v2.30.1
v2.30.2
v2.31.0
v2.32.0
v2.32.1
v2.32.2
v2.32.3
v2.32.4
v2.32.5
v2.32.6
v2.33.0
v2.33.1
v2.33.2
v2.33.3
v2.34.0
v2.34.1
v2.34.2
v2.34.3
v2.34.4
v2.34.5
v2.34.6
v2.35.0
v2.36.0
v2.36.1
v2.36.2
v2.36.3
v2.37.0
v2.37.1
v2.37.2
v2.38.0
v2.39.0
v2.40.0
v2.41.0
v2.42.0
v2.42.1
v2.42.2
v2.43.0
v2.44.0
v3.*
v3.0.2
v3.0.4
v3.0.5
v3.0.6
v3.0.7
v3.0.8
v3.1.0
v3.1.1
v3.1.2
v3.1.3
v3.1.4
v3.1.5
v3.1.6
v3.1.7
v3.10.0
v3.10.1
v3.10.10
v3.10.2
v3.10.3
v3.10.4
v3.10.5
v3.10.6
v3.10.7
v3.10.8
v3.10.9
v3.11.0
v3.11.1
v3.11.10
v3.11.2
v3.11.3
v3.11.4
v3.11.5
v3.11.6
v3.11.7
v3.11.8
v3.11.9
v3.12.0
v3.13.0
v3.13.1
v3.13.2
v3.13.3
v3.13.4
v3.13.5
v3.13.6
v3.13.7
v3.14.0
v3.14.1
v3.14.2
v3.14.3
v3.14.4
v3.14.5
v3.15.0
v3.15.1
v3.15.2
v3.15.3
v3.15.4
v3.15.5
v3.15.6
v3.15.7
v3.16.0
v3.16.1
v3.16.2
v3.16.3
v3.16.4
v3.16.5
v3.16.6
v3.16.7
v3.17.0
v3.17.1
v3.17.2
v3.17.3
v3.17.4
v3.17.5
v3.17.6
v3.17.7
v3.17.8
v3.17.9
v3.18.0
v3.18.2
v3.19.0
v3.19.1
v3.19.2
v3.19.3
v3.2.0
v3.2.1
v3.2.2
v3.2.3
v3.2.4
v3.20.0
v3.20.1
v3.20.2
v3.20.3
v3.21.0
v3.22.0
v3.22.1
v3.22.2
v3.22.3
v3.22.4
v3.22.5
v3.23.0
v3.23.1
v3.24.0
v3.24.1
v3.25.0
v3.25.1
v3.25.2
v3.25.3
v3.26.0
v3.26.1
v3.26.2
v3.26.3
v3.26.4
v3.27.0
v3.28.0
v3.29.0
v3.29.1
v3.3.0
v3.3.1
v3.3.2
v3.3.3
v3.3.4
v3.3.5
v3.3.6
v3.30.0
v3.30.1
v3.30.2
v3.30.3
v3.30.4
v3.31.0
v3.31.1
v3.31.2
v3.4.0
v3.4.1
v3.4.2
v3.4.3
v3.4.4
v3.6.2
v3.6.3
v3.6.4
v3.7.0
v3.7.1
v3.7.2
v3.7.3
v3.7.4
v3.8.0
v3.8.1
v3.8.2
v3.9.1
v3.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53769.json"