{"data":{"id":"75abb0fa-b865-458c-808f-ba50c517fbfe","title":"GHSA-6f7g-v4pp-r667: Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow in Flowise","summary":"Flowise contains an authentication bypass that lets an unauthenticated attacker obtain OAuth 2.0 access tokens tied to a public chatflow. The GET /api/v1/public-chatbotConfig/<chatflowId> endpoint returns internal flowData without authentication, including OAuth credential identifiers. The POST /api/v1/oauth2-credential/refresh/<credentialId> endpoint then refreshes tokens without authentication or authorization checks, enabling access to third-party services such as Gmail.","solution":"N/A -- no mitigation discussed in source.","labels":["security","privacy"],"sourceUrl":"https://github.com/advisories/GHSA-6f7g-v4pp-r667","publishedAt":"2026-04-16T21:52:46.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":["flowise@<= 3.0.13 (fixed: 3.1.0)"],"affectedPackageNames":["flowise"],"affectedPackageRefs":["npm:flowise"],"affectedVendors":[],"affectedVendorsRaw":["Flowise","Gmail OAuth2"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":["GHSA-6f7g-v4pp-r667"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":true,"disclosureDate":"2026-04-16T21:52:46.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null}}