{"id":"CVE-2026-70478","revision":"952b27fa3c9949f0a353430032ecfd85","records":[{"revision":"952b27fa3c9949f0a353430032ecfd85","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-70478","aliases":[],"title":"Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the POST /api/v1/oauth2-credential/refresh/:credentialId endpoint is included in WHITELIST_URLS and requires no authentication. The endpoint decrypts the stored credential, sends a refresh request to the configured OAuth provider with the client secret and refresh token, and returns the refreshed access_token in the response body. An attacker with a credential ID can use the token to access the victim's connected service and can also exhaust refresh-token quota. This issue is fixed in 3.1.3.","state":0,"publishedAt":"2026-08-04T19:37:22.02+00:00","modifiedAt":"2026-08-05T19:05:33.447+00:00","affected":[{"ecosystem":"Vendor product","name":"Flowise","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FlowiseAI\",\n                    \"product\": \"Flowise\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.1.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N","score":9.2,"severity":"CRITICAL"}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-70478","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-70478","identifiers":["CVE-2026-70478"]},"retained":false,"historicalAffected":[]}],"coverage":[]}