{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42277", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-26T11:53:27.708Z", "datePublished": "2026-05-08T03:51:11.520Z", "dateUpdated": "2026-05-08T21:28:14.132Z"}, "containers": {"cna": {"title": "Onyx: IDOR in /chat/file/{file_id} allows any authenticated user to download other users files", "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": "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"}}], "references": [{"name": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r"}], "affected": [{"vendor": "onyx-dot-app", "product": "onyx", "versions": [{"version": "< 3.0.9", "status": "affected"}, {"version": ">= 3.1.0, < 3.1.6", "status": "affected"}, {"version": ">= 3.2.0, < 3.2.6", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-08T03:51:11.520Z"}, "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'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."}], "source": {"advisory": "GHSA-vg3h-35f7-7w6r", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-08T14:29:07.152170Z", "id": "CVE-2026-42277", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-08T21:28:14.132Z"}}]}}

{}

{"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'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."}], "id": "CVE-2026-42277", "lastModified": "2026-05-08T16:02:14.343", "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"}]}, "published": "2026-05-08T05:16:10.740", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-vg3h-35f7-7w6r"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-05-08T06:30:46.290168+00:00", "updated": "2026-05-08T06:30:46.290179+00:00", "vendors": []}