FKIE_CVE-2026-63178

Vulnerability from fkie_nvd - Published: 2026-08-17 22:17 - Updated: 2026-09-18 20:09
Severity
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Summary
Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition's PATCH /manage/admin/user-group/{user_group_id} and POST /manage/admin/user-group/{user_group_id}/add-users endpoints in ee/onyx/server/user_group/api.py call update_user_group and add_users_to_user_group in ee/onyx/db/user_group.py without enforcing _validate_curator_can_modify_group, allowing a curator to add accounts to arbitrary groups and obtain document access through get_acl_for_user and the OpenSearch access_control_list filter. This issue is fixed in version 4.3.0.
References
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/commit/46e19cc2750fed659488cb12a1f171016ba5a099
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/commit/b9e1c6894be3c237283f4b5fd4eb0af935b40664
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/pull/12525
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/pull/12549
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/releases/tag/v4.3.0
security-advisories@github.comhttps://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "onyx",
          "vendor": "onyx-dot-app",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 4.3.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Onyx is an open-source AI platform. Prior to 4.3.0, Onyx Enterprise Edition\u0027s PATCH /manage/admin/user-group/{user_group_id} and POST /manage/admin/user-group/{user_group_id}/add-users endpoints in ee/onyx/server/user_group/api.py call update_user_group and add_users_to_user_group in ee/onyx/db/user_group.py without enforcing _validate_curator_can_modify_group, allowing a curator to add accounts to arbitrary groups and obtain document access through get_acl_for_user and the OpenSearch access_control_list filter. This issue is fixed in version 4.3.0."
    }
  ],
  "id": "CVE-2026-63178",
  "lastModified": "2026-09-18T20:09:01.757",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.2,
        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-63178",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-18T15:42:41.983120Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-17T22:17:16.130",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onyx-dot-app/onyx/commit/46e19cc2750fed659488cb12a1f171016ba5a099"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onyx-dot-app/onyx/commit/b9e1c6894be3c237283f4b5fd4eb0af935b40664"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onyx-dot-app/onyx/pull/12525"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onyx-dot-app/onyx/pull/12549"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onyx-dot-app/onyx/releases/tag/v4.3.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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