{"id":"CVE-2026-69250","aliases":["GHSA-r745-8hwv-h473"],"url":"https://o3.security/vulnerability/CVE-2026-69250","summary":"Flowise: Unauthenticated OAuth2 Refresh Enables Non-Blind SSRF and Secret Exfiltration","details":"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.","published":"2026-08-04T14:20:35.395Z","modified":"2026-09-16T03:47:17.880836261Z","cvss":null,"epss":{"score":0.00342,"percentile":0.26701,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"flowise","fixedVersion":"3.1.3"}],"fix":{"url":"https://github.com/FlowiseAI/Flowise/commit/da8b251a9a4c59484ceaf6f71df7406aede7bef2","label":"FlowiseAI/Flowise@da8b251"},"references":[{"type":"WEB","url":"https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/69xxx/CVE-2026-69250.json"},{"type":"ADVISORY","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-r745-8hwv-h473"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-69250"},{"type":"FIX","url":"https://github.com/FlowiseAI/Flowise/commit/da8b251a9a4c59484ceaf6f71df7406aede7bef2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-16T03:47:17.880836261Z"}}