{"api_version":"1","generated_at":"2026-04-24T00:02:18+00:00","cve":"CVE-2026-41267","urls":{"html":"https://cve.report/CVE-2026-41267","api":"https://cve.report/api/cve/CVE-2026-41267.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-41267","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-41267"},"summary":{"title":"Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.","state":"PUBLISHED","assigner":"GitHub_M","published_at":"2026-04-23 20:16:15","updated_at":"2026-04-23 20:16:15"},"problem_types":["CWE-639","CWE-915","CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key","CWE-915 CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes"],"metrics":[{"version":"3.1","source":"security-advisories@github.com","type":"Secondary","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"8.1","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj","name":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj","refsource":"134c704f-9b21-4f2e-91b3-4a467353bcc0","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-41267","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-41267","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FlowiseAI","product":"Flowise","version":"affected < 3.1.0","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-41267","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","timestamp":"2026-04-23T19:44:40.847141Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-04-23T19:44:53.201Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"references":[{"tags":["exploit"],"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj"}],"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"product":"Flowise","vendor":"FlowiseAI","versions":[{"status":"affected","version":"< 3.1.0"}]}],"descriptions":[{"lang":"en","value":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","description":"CWE-639: Authorization Bypass Through User-Controlled Key","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-915","description":"CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-04-23T19:12:26.765Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M"},"references":[{"name":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj"}],"source":{"advisory":"GHSA-48m6-ch88-55mj","discovery":"UNKNOWN"},"title":"Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association"}},"cveMetadata":{"assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","assignerShortName":"GitHub_M","cveId":"CVE-2026-41267","datePublished":"2026-04-23T19:12:26.765Z","dateReserved":"2026-04-18T14:01:46.801Z","dateUpdated":"2026-04-23T19:44:53.201Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-04-23 20:16:15","lastModifiedDate":"2026-04-23 20:16:15","problem_types":["CWE-639","CWE-915","CWE-639 CWE-639: Authorization Bypass Through User-Controlled Key","CWE-915 CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes"],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"41267","Ordinal":"1","Title":"Flowise: Improper Mass Assignment in Account Registration Enable","CVE":"CVE-2026-41267","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"41267","Ordinal":"1","NoteData":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, an improper mass assignment (JSON injection) vulnerability in the account registration endpoint of Flowise Cloud allows unauthenticated attackers to inject server-managed fields and nested objects during account creation. This enables client-controlled manipulation of ownership metadata, timestamps, organization association, and role mappings, breaking trust boundaries in a multi-tenant environment. This vulnerability is fixed in 3.1.0.","Type":"Description","Title":"Flowise: Improper Mass Assignment in Account Registration Enable"}]}}}