{"id":"CVE-2026-56270","aliases":["GHSA-6pcv-j4jx-m4vx"],"url":"https://o3.security/vulnerability/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.","published":"2026-06-24T11:53:14.938Z","modified":"2026-08-07T11:51:25.130312690Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"flowise","fixedVersion":"3.1.0"}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:51:25.130312690Z"}}