{"id":"CVE-2026-56271","revision":"06fe427e4b0249eab010924e44fab292","records":[{"revision":"06fe427e4b0249eab010924e44fab292","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-56271","aliases":[],"title":"Flowise - Weak Default JWT Secrets in Authentication Middleware","description":"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.","state":0,"publishedAt":"2026-07-12T12:06:32.246+00:00","modifiedAt":"2026-07-13T15:41:09.159+00:00","affected":[{"ecosystem":"Vendor product","name":"Flowise","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Flowise\",\n                    \"product\": \"Flowise\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"packageURL\": \"pkg:npm/flowise\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.1.0\"\n                        },\n                        {\n                            \"version\": \"3.1.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cc4f-hjpj-g9p8","https://www.vulncheck.com/advisories/flowise-weak-default-jwt-secrets-in-authentication-middleware"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-56271","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-56271","identifiers":["CVE-2026-56271"]},"retained":false,"historicalAffected":[]}],"coverage":[]}