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vuln-cve/data/2026/63xxx/CVE-2026-63178.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-63178",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-07-15T22:13:00.720Z",
"datePublished": "2026-08-17T21:30:40.463Z",
"dateUpdated": "2026-08-18T15:43:08.077Z"
},
"containers": {
"cna": {
"title": "Onyx Curator-scope IDOR: any curator can modify membership of arbitrary user groups via unscoped PATCH /manage/admin/user-group/{id} and /add-users leading to cross-group document disclosure",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-639",
"lang": "en",
"description": "CWE-639: Authorization Bypass Through User-Controlled Key",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV3_1": {
"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"
}
}
],
"references": [
{
"name": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m"
},
{
"name": "https://github.com/onyx-dot-app/onyx/pull/12525",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/onyx-dot-app/onyx/pull/12525"
},
{
"name": "https://github.com/onyx-dot-app/onyx/pull/12549",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/onyx-dot-app/onyx/pull/12549"
},
{
"name": "https://github.com/onyx-dot-app/onyx/commit/46e19cc2750fed659488cb12a1f171016ba5a099",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/onyx-dot-app/onyx/commit/46e19cc2750fed659488cb12a1f171016ba5a099"
},
{
"name": "https://github.com/onyx-dot-app/onyx/commit/b9e1c6894be3c237283f4b5fd4eb0af935b40664",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/onyx-dot-app/onyx/commit/b9e1c6894be3c237283f4b5fd4eb0af935b40664"
},
{
"name": "https://github.com/onyx-dot-app/onyx/releases/tag/v4.3.0",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/onyx-dot-app/onyx/releases/tag/v4.3.0"
}
],
"affected": [
{
"vendor": "onyx-dot-app",
"product": "onyx",
"versions": [
{
"version": "< 4.3.0",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-08-17T21:30:40.463Z"
},
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"source": {
"advisory": "GHSA-7f48-vgpj-h95m",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"references": [
{
"url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-7f48-vgpj-h95m",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-18T15:42:41.983120Z",
"id": "CVE-2026-63178",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-18T15:43:08.077Z"
}
}
]
}
}