{"id":"CVE-2026-41267","state":"PUBLISHED","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.","publishedAt":"2026-04-23T19:12:26.765Z","updatedAt":"2026-04-23T19:44:53.201Z","severity":{"score":8.1,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["FlowiseAI Flowise"],"affected":[{"vendor":"FlowiseAI","product":"Flowise","versions":[{"version":"< 3.1.0","status":"affected"}]}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj"],"weaknesses":["CWE-639","CWE-915"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41267.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41267","state":"PUBLISHED","datePublished":"2026-04-23T19:12:26.765Z","dateUpdated":"2026-04-23T19:44:53.201Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-18T14:01:46.801Z"},"containers":{"cna":{"title":"Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organization Association","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."}],"affected":[{"vendor":"FlowiseAI","product":"Flowise","versions":[{"version":"< 3.1.0","status":"affected"}]}],"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","tags":["x_refsource_CONFIRM"]}],"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","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-915","lang":"en","description":"CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-23T19:12:26.765Z"},"source":{"advisory":"GHSA-48m6-ch88-55mj","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-48m6-ch88-55mj","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-23T19:44:40.847141Z","id":"CVE-2026-41267","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-23T19:44:53.201Z"}}]}}}