{"id":"CVE-2026-56271","summary":"Flowise - Weak Default JWT Secrets in Authentication Middleware","details":"Flowise before 3.1.0 (affected versions 3.0.13 and earlier) uses weak hardcoded default JWT secrets ('auth_token', 'refresh_token') and default audience and issuer values ('AUDIENCE', 'ISSUER') in the enterprise passport authentication middleware (packages/server/src/enterprise/middleware/passport/index.ts). When the corresponding environment variables (JWT_AUTH_TOKEN_SECRET, JWT_REFRESH_TOKEN_SECRET, JWT_AUDIENCE, JWT_ISSUER) are not set, the application silently falls back to these publicly known defaults, allowing an attacker to forge valid JWTs and impersonate any user, including administrators, resulting in authentication bypass.","aliases":["GHSA-cc4f-hjpj-g9p8"],"modified":"2026-08-04T11:51:12.028474477Z","published":"2026-07-12T12:06:32.246Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56271.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-321"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56271.json"},{"type":"ADVISORY","url":"https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cc4f-hjpj-g9p8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56271"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/flowise-weak-default-jwt-secrets-in-authentication-middleware"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/flowiseai/flowise","events":[{"introduced":"0"},{"fixed":"378d3ec3bd2d4157d6aa694bbc5ffa50c4159b97"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"3.1.0"}],"source":"AFFECTED_FIELD"}}],"versions":["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","flo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