{"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": "2026-08-17T21:30:40.463Z"}, "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"}}}}

{}

{"affected": [{"affectedData": [{"product": "onyx", "vendor": "onyx-dot-app", "versions": [{"status": "affected", "version": "< 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'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."}], "id": "CVE-2026-63178", "lastModified": "2026-08-17T22:17:16.130", "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"}]}, "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"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-08-17T23:00:06.463544+00:00", "updated": "2026-08-17T23:00:06.463550+00:00", "vendors": []}