{"id":"CVE-2026-69250","state":"PUBLISHED","title":"Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled accessTokenUrl without SSRF protections. Runtime validation confirmed that the endpoint was reachable without authentication, triggered outbound POST requests to an attacker-controlled server, reflected the full remote response body to the caller through tokenInfo, and sent client_id, client_secret, grant_type=refresh_token, and refresh_token in the request body. This issue is fixed in version 3.1.3.","publishedAt":"2026-08-04T14:20:35.395Z","updatedAt":"2026-08-04T19:52:53.398Z","severity":{"score":8.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["FlowiseAI Flowise"],"affected":[{"vendor":"FlowiseAI","product":"Flowise","versions":[{"version":"< 3.1.3","status":"affected"}]}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473","https://github.com/FlowiseAI/Flowise/commit/da8b251a9a4c59484ceaf6f71df7406aede7bef2","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"weaknesses":["CWE-639"],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/69xxx/CVE-2026-69250.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-69250","state":"PUBLISHED","datePublished":"2026-08-04T14:20:35.395Z","dateUpdated":"2026-08-04T19:52:53.398Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-08-03T19:54:19.852Z"},"containers":{"cna":{"title":"Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration","descriptions":[{"lang":"en","value":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the OAuth2 token refresh endpoint POST /api/v1/oauth2-credential/refresh/:credentialId is unauthenticated by design and performs a server-side HTTP request to the credential-controlled accessTokenUrl without SSRF protections. Runtime validation confirmed that the endpoint was reachable without authentication, triggered outbound POST requests to an attacker-controlled server, reflected the full remote response body to the caller through tokenInfo, and sent client_id, client_secret, grant_type=refresh_token, and refresh_token in the request body. This issue is fixed in version 3.1.3."}],"affected":[{"vendor":"FlowiseAI","product":"Flowise","versions":[{"version":"< 3.1.3","status":"affected"}]}],"references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473","name":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/FlowiseAI/Flowise/commit/da8b251a9a4c59484ceaf6f71df7406aede7bef2","name":"https://github.com/FlowiseAI/Flowise/commit/da8b251a9a4c59484ceaf6f71df7406aede7bef2","tags":["x_refsource_MISC"]},{"url":"https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3","name":"https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.5,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-04T14:20:35.395Z"},"source":{"advisory":"GHSA-r745-8hwv-h473","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-04T19:32:19.780120Z","id":"CVE-2026-69250","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-04T19:52:53.398Z"}}]}}}