FKIE_CVE-2026-42277

Vulnerability from fkie_nvd - Published: 2026-05-08 05:16 - Updated: 2026-06-17 10:47
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/{file_id} endpoint allows any authenticated user to download any other user's uploaded files by providing the file UUID. The endpoint verifies the caller is authenticated but never checks that the file belongs to them. An attacker who knows or obtains a file UUID can access confidential documents, chat attachments, and other files uploaded by any user in the system. This issue has been patched in versions 3.0.9, 3.1.6, and 3.2.6.
References
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6rVendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6rVendor Advisory
Impacted products
Vendor Product Version
onyx onyx *
onyx onyx *
onyx onyx *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "onyx",
          "vendor": "onyx-dot-app",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.0.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.1.0, \u003c 3.1.6"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.2.0, \u003c 3.2.6"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:onyx:onyx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8EA5C508-9DEA-44FA-A188-0B1B87FEDBDE",
              "versionEndExcluding": "3.0.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:onyx:onyx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ABCC8200-5559-45DD-87E8-1CAD6E7D6828",
              "versionEndExcluding": "3.1.6",
              "versionStartIncluding": "3.1.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:onyx:onyx:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F4E43C7B-9888-4225-86E0-0309E34186D2",
              "versionEndExcluding": "3.2.6",
              "versionStartIncluding": "3.2.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the GET /chat/file/{file_id} endpoint allows any authenticated user to download any other user\u0027s uploaded files by providing the file UUID. The endpoint verifies the caller is authenticated but never checks that the file belongs to them. An attacker who knows or obtains a file UUID can access confidential documents, chat attachments, and other files uploaded by any user in the system. This issue has been patched in versions 3.0.9, 3.1.6, and 3.2.6."
    }
  ],
  "id": "CVE-2026-42277",
  "lastModified": "2026-06-17T10:47:37.213",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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-2026-42277",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-08T14:29:07.152170Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-08T05:16:10.740",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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