{"id":"CVE-2026-56275","aliases":["GHSA-9hrv-gvrv-6gf2"],"title":"Flowise Execute Flow function has an SSRF vulnerability","summary":"Flowise Execute Flow function has an SSRF vulnerability","severity":"medium","cvss":7.1,"cwe":["CWE-918"],"vendor":"flowise","product":"flowise","ecosystem":"npm","affected":["flowise <= 3.0.13","flowise-components <= 3.0.13"],"patched":["flowise 3.1.0","flowise-components 3.1.0"],"published":"2026-04-16","updated":"2026-09-23","sourceUpdated":"2026-09-23T21:24:58Z","source":"GHSA","sourceUrl":"https://github.com/advisories/GHSA-9hrv-gvrv-6gf2","references":[{"url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9hrv-gvrv-6gf2"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56275"},{"url":"https://www.vulncheck.com/advisories/flowise-server-side-request-forgery-via-execute-flow-base-url"},{"url":"https://github.com/advisories/GHSA-9hrv-gvrv-6gf2"}],"tags":["ghsa","npm"],"epss":0.00315,"epssPercentile":0.21678,"ingestedAt":"2026-09-23T21:33:13.541Z","slug":"CVE-2026-56275","body":"## Overview\n\n### Summary\n\nThe attacker provides an intranet address through the base url field configured in the Execute Flow node \n→ Bypass checkDenyList / resolveAndValidate in httpSecurity.ts (not called)\n→ Causes the server to initiate an HTTP request to any internal network address, read cloud metadata, or detect internal network services \n\n### Details\n\n<img width=\"1280\" height=\"860\" alt=\"9a52a74e6fe2fd78e4962d1d68057fc2\" src=\"https://github.com/user-attachments/assets/20df0006-9129-4886-8928-16d19a617c23\" />\n\nThen initiate the call: \n\n```\nPOST /api/v1/prediction/d6739838-d3b3-43d9-86ff-911a3d757a7e HTTP/1.1\nHost: 127.0.0.1:3000\nContent-Type: application/json\nAuthorization: Bearer apikey\nContent-Length: 17\n\n{\"question\": \"1\"}\n```\n\nServer received a request:\n\n<img width=\"1432\" height=\"172\" alt=\"f45c757fec408e13739db068252ff21b\" src=\"https://github.com/user-attachments/assets/d3dfe0f5-83ec-4c79-ab32-754382a68d5f\" />\n\nAnd there is an echo: \n\n<img width=\"1280\" height=\"666\" alt=\"fa0caf0deb306cfeeea8fdf8941a287e\" src=\"https://github.com/user-attachments/assets/55a94d25-120b-4e9c-9517-46c2fc2b667f\" />\n\nFix:\nCall secureFetch for verification\n\n\n\n### Impact\n\nThis is a Server-Side Request Forgery (SSRF) vulnerability that may lead to the following risks: \n- Explore Internal Web Applications\n- Access sensitive management interfaces\n- Leak internal configuration, credentials, or confidential information\n\nThis vulnerability significantly increases the risk of internal service enumeration and potential lateral movement in enterprise environments.\n\n## Affected packages\n\n- `flowise <= 3.0.13`\n- `flowise-components <= 3.0.13`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `flowise 3.1.0`\n- `flowise-components 3.1.0`","depth":"sunlit","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}