FKIE_CVE-2026-53769

Vulnerability from fkie_nvd - Published: 2026-09-04 21:17 - Updated: 2026-09-30 19:57
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/avo-hq/avo/commit/de12070dbac0cb6a7e2bea357f9697f99e92554c
security-advisories@github.comhttps://github.com/avo-hq/avo/pull/4520
security-advisories@github.comhttps://github.com/avo-hq/avo/releases/tag/v3.32.0
security-advisories@github.comhttps://github.com/avo-hq/avo/security/advisories/GHSA-pqpw-cvm4-8mv9
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/avo-hq/avo/security/advisories/GHSA-pqpw-cvm4-8mv9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "avo",
          "vendor": "avo-hq",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.28.0, \u003c 3.32.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s 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_\u003cfield\u003e? 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."
    }
  ],
  "id": "CVE-2026-53769",
  "lastModified": "2026-09-30T19:57:08.043",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-53769",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-09T15:57:19.419562Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-04T21:17:25.300",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/avo-hq/avo/commit/de12070dbac0cb6a7e2bea357f9697f99e92554c"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/avo-hq/avo/pull/4520"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/avo-hq/avo/releases/tag/v3.32.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/avo-hq/avo/security/advisories/GHSA-pqpw-cvm4-8mv9"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/avo-hq/avo/security/advisories/GHSA-pqpw-cvm4-8mv9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        },
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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