{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56271", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-06-20T01:47:54.000Z", "datePublished": "2026-07-12T12:06:32.246Z", "dateUpdated": "2026-07-12T12:06:32.246Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-12T12:06:32.246Z"}, "datePublic": "2026-04-15T00:00:00.000Z", "title": "Flowise - Weak Default JWT Secrets in Authentication Middleware", "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use of Hard-coded Cryptographic Key", "cweId": "CWE-321", "type": "CWE"}]}], "affected": [{"vendor": "Flowise", "product": "Flowise", "defaultStatus": "unaffected", "packageURL": "pkg:npm/flowise", "versions": [{"version": "0", "status": "affected", "versionType": "semver", "lessThan": "3.1.0"}, {"version": "3.1.0", "status": "unaffected", "versionType": "semver"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*", "versionEndExcluding": "3.1.0"}]}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"version": "4.0", "vectorString": "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", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL"}}, {"format": "CVSS", "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL"}}], "references": [{"url": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-cc4f-hjpj-g9p8", "name": "GitHub Security Advisory (GHSA-cc4f-hjpj-g9p8)", "tags": ["vendor-advisory"]}, {"name": "VulnCheck Advisory: Flowise - Weak Default JWT Secrets in Authentication Middleware", "tags": ["third-party-advisory"], "url": "https://www.vulncheck.com/advisories/flowise-weak-default-jwt-secrets-in-authentication-middleware"}], "credits": [{"lang": "en", "value": "kolega-ai-dev", "type": "reporter"}], "x_generator": {"engine": "vulncheck-endgame"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.1.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[3.1.0,*]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Flowise", "source": "cna", "vendor": "Flowise"}, "product": "flowise", "vendor": "flowiseai"}], "created": "2026-07-12T15:45:16.856016+00:00", "updated": "2026-07-12T15:45:16.856057+00:00", "vendors": ["flowiseai", "flowiseai$PRODUCT$flowise"]}