{"id":"CVE-2026-70478","summary":"Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service","details":"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.","aliases":["GHSA-qgvm-j2hm-6m38"],"modified":"2026-08-12T03:51:32.520458758Z","published":"2026-08-04T19:37:22.020Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-200"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70478.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70478.json"},{"type":"ADVISORY","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-qgvm-j2hm-6m38"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70478"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/flowiseai/flowise","events":[{"introduced":"0"},{"fixed":"4114b3b506e7bbee155141175a2ba48e426919dd"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.1.2"}],"source":"AFFECTED_FIELD"}}],"versions":["flowise@3.1.1","flowise-ui@3.1.1","flowise-components@3.1.1","flowise@3.1.0","flowise-ui@3.1.0","flowise-components@3.1.0","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","flowise@1.4.2","flowise-components@1.4.2","flowise@1.4.1","flowise-components@1.4.1","flowise@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