{"id":"CVE-2026-56270","summary":"Flowise - Unauthenticated OAuth Secrets Disclosure via /api/v1/loginmethod Endpoint","details":"Flowise before 3.1.0 (versions 3.0.13 and earlier) contains a missing authentication vulnerability in the /api/v1/loginmethod endpoint that allows unauthenticated users to retrieve an organization's complete SSO configuration, including OAuth client secrets in cleartext, by providing an organizationId parameter. Remote attackers can send a GET request to harvest sensitive API credentials for Google, Microsoft/Azure, GitHub, and Auth0 integrations. This affects FlowiseAI Cloud and self-hosted instances where the endpoint is exposed.","aliases":["GHSA-6pcv-j4jx-m4vx"],"modified":"2026-08-12T03:51:28.720323536Z","published":"2026-06-24T11:53:14.938Z","database_specific":{"cwe_ids":["CWE-306"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56270.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56270.json"},{"type":"ADVISORY","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-6pcv-j4jx-m4vx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56270"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/flowise-unauthenticated-oauth-secrets-disclosure-via-api-v1-loginmethod-endpoint"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/flowiseai/flowise","events":[{"introduced":"0"},{"fixed":"378d3ec3bd2d4157d6aa694bbc5ffa50c4159b97"}],"database_specific":{"source":["AFFECTED_FIELD","CPE_RANGE"],"cpe":"cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"3.1.0"}]}}],"versions":["pre-langchain-v1","flowise@3.0.13","flowise-ui@3.0.13","flowise-components@3.0.13","flowise@3.0.12","flowise-ui@3.0.12","flowise-components@3.0.12","flowise@3.0.11","flowise-ui@3.0.11","flowise-components@3.0.11","flowise@3.0.10","flowise-ui@3.0.10","flowise-components@3.0.10","flowise@3.0.9","flowise-ui@3.0.9","flowise-components@3.0.9","flowise@3.0.8","flowise-ui@3.0.8","flowise-components@3.0.8","flowise@3.0.7","flowise-ui@3.0.7","flowise-components@3.0.7","flowise@3.0.6","flowise-ui@3.0.6","flowise-components@3.0.6","flowise@3.0.5","flowise-ui@3.0.5","flowise-components@3.0.5","flowise@3.0.4","flowise-ui@3.0.4","flowise-components@3.0.4","flowise@3.0.3","flowise-ui@3.0.3","flowise-components@3.0.3","flowise@3.0.2","flowise-ui@3.0.2","flowise-components@3.0.2","flowise@3.0.1","flowise-ui@3.0.1","flowise-components@3.0.1","flowise@3.0.0","flowise-ui@3.0.0","flowise-components@3.0.0","flowise@2.2.8","flowise-ui@2.2.8","flowise-components@2.2.8","flowise@2.2.7-patch.1","flowise-ui@2.2.7-patch.1","flowise-components@2.2.7-patch.1","flowise@2.2.7","flowise-ui@2.2.7","flowise-components@2.2.7","flowise@2.2.6-hotfix.1","flowise@2.2.6","flowise-ui@2.2.6","flowise-components@2.2.6","flowise@2.2.5","flowise-ui@2.2.5","flowise-components@2.2.5","flowise@2.2.4","flowise-ui@2.2.4","flowise-components@2.2.4","flowise@2.2.3","flowise-ui@2.2.3","flowise-components@2.2.3","flowise@2.2.2","flowise-ui@2.2.2","flowise-components@2.2.2","flowise@2.2.1","flowise-ui@2.2.1","flowise-components@2.2.1","flowise@2.2.0","flowise-ui@2.2.0","flowise-components@2.2.0","flowise@2.1.5","flowise-ui@2.1.5","flowise-components@2.1.5","flowise@2.1.4","flowise-ui@2.1.4","flowise-components@2.1.4","flowise@2.1.3","flowise-ui@2.1.3","flowise-components@2.1.3","flowise@2.1.2","flowise-ui@2.1.2","flowise-components@2.1.2","flowise@2.1.1","flowise-ui@2.1.1","flowise-components@2.1.1","flowise@2.1.0","flowise-ui@2.1.0","flowise-components@2.1.0","flowise@2.0.7","flowise-ui@2.0.7","flowise-components@2.0.7","flowise@2.0.6","flowise-ui@2.0.6","flowise-components@2.0.6","flowise@2.0.5","flowise-ui@2.0.5","flowise-components@2.0.5","flowise@2.0.4","flowise-ui@2.0.4","flowise-components@2.0.4","flowise@2.0.3","flowise-ui@2.0.3","flowise-components@2.0.3","flowise@2.0.2","flowise-ui@2.0.2","flowise-components@2.0.2","flowise@1.8.4","flowise-ui@1.8.4","flowise-components@1.8.6","flowise@1.8.3","flowise-ui@1.8.3","flowise-components@1.8.4","flowise@1.8.2","flowise-ui@1.8.2","flowise-components@1.8.3","flowise@1.8.1","flowise-ui@1.8.1","flowise-components@1.8.1","flowise@1.8.0","flowise-ui@1.8.0","flowise-components@1.8.0","flowise@1.7.2","flowise-ui@1.7.2","flowise-components@1.7.2","flowise@1.7.1","flowise-ui@1.7.1","flowise-components@1.7.1","flowise@1.7.0","flowise-ui@1.7.0","flowise-components@1.7.0","flowise@1.6.6","flowise-ui@1.6.6","flowise-components@1.6.8","flowise@1.6.5","flowise-ui@1.6.5","flowise-components@1.6.7","flowise@1.6.4","flowise-ui@1.6.4","flowise-components@1.6.6","flowise@1.6.3","flowise-ui@1.6.3","flowise-components@1.6.5","flowise@1.6.2","flowise-ui@1.6.2","flowise-components@1.6.4","flowise@1.6.1","flowise-ui@1.6.1","flowise-components@1.6.3","flowise@1.6.0","flowise-ui@1.6.0","flowise-components@1.6.2","flowise@1.5.1","flowise-ui@1.5.1","flowise-components@1.6.1","flowise@1.5.0","flowise-ui@1.5.0","flowise-components@1.6.0","flowise@1.4.12","flowise-ui@1.4.9","flowise-components@1.5.3","flowise@1.4.11","flowise-ui@1.4.8","flowise-components@1.5.2","flowise@1.4.10","flowise-ui@1.4.7","flowise-components@1.5.1","flowise@1.4.9","flowise@1.4.8","flowise-ui@1.4.6","flowise-components@1.5.0","flowise@1.4.7","flowise-ui@1.4.5","flowise-components@1.4.9","flowise-components@1.4.8","flowise@1.4.6","flowise-ui@1.4.4","flowise-components@1.4.7","flowise@1.4.5","flowise-ui@1.4.3","flowise@1.4.4","flowise-ui@1.4.2","flowise-components@1.4.6","flo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