{"id":"EUVD-2026-52872","revision":null,"records":[{"revision":"f70c8a8685e34d1b835e9a21ee3f5703","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-70476","aliases":[],"title":"Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation","description":"Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, several organization billing endpoints in packages/server/src/enterprise/routes/organization.route.ts and packages/server/src/enterprise/controllers/organization.controller.ts accept attacker-controlled Stripe subscriptionId values without verifying that the identifier belongs to the authenticated user's organization. An authenticated attacker can perform unauthorized Stripe subscription operations on other tenants, including changing subscription plans or modifying seat quantities, resulting in financial impact and service disruption. This issue is fixed in 3.1.3.","state":0,"publishedAt":"2026-08-04T19:23:57.04+00:00","modifiedAt":"2026-08-05T14:51:23.779+00:00","affected":[{"ecosystem":"Vendor product","name":"Flowise","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FlowiseAI\",\n                    \"product\": \"Flowise\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.1.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.3,"severity":"HIGH"}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gmmw-qg98-6j6p","https://github.com/FlowiseAI/Flowise/pull/6321","https://github.com/FlowiseAI/Flowise/commit/4d7899d02ca370a5510406be5c91483085a412f9","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-70476","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-70476","identifiers":["CVE-2026-70476"]},"retained":false,"historicalAffected":[]},{"revision":"b9f06ffaddc944b1acfd7b615a182fbe","observedAt":"2026-11-07T14:22:24.444+00:00","statement":{"source":"euvd","id":"EUVD-2026-52872","aliases":["CVE-2026-70476","GHSA-gmmw-qg98-6j6p"],"title":"Flowise is a drag & drop user interface to build a customized large language model flow. 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This issue is fixed in 3.1.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","score":8.3,"severity":null}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gmmw-qg98-6j6p","https://github.com/FlowiseAI/Flowise/pull/6321","https://github.com/FlowiseAI/Flowise/commit/4d7899d02ca370a5510406be5c91483085a412f9","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-52872","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 4, 2026, 7:23:57 PM","dateUpdated":"Aug 5, 2026, 2:51:23 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. 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Prior to 3.1.3, several organization billing endpoints in packages/server/src/enterprise/routes/organization.route.ts and packages/server/src/enterprise/controllers/organization.controller.ts accept attacker-controlled Stripe subscriptionId values without verifying that the identifier belongs to the authenticated user's organization. An authenticated attacker can perform unauthorized Stripe subscription operations on other tenants, including changing subscription plans or modifying seat quantities, resulting in financial impact and service disruption. This issue is fixed in 3.1.3.","state":0,"publishedAt":"2026-08-04T20:16:54.33+00:00","modifiedAt":"2026-10-24T15:10:00.19+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.3,"severity":"HIGH"},{"system":"CVSS 3.1 · nvd@nist.gov · Primary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L","score":8.2,"severity":"HIGH"}],"references":["https://github.com/FlowiseAI/Flowise/commit/4d7899d02ca370a5510406be5c91483085a412f9","https://github.com/FlowiseAI/Flowise/pull/6321","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3","https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gmmw-qg98-6j6p"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70476","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-284","CWE-639"],"productCriteria":["cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*"],"sourceDates":{"published":"2026-08-04T20:16:54.330","lastModified":"2026-10-24T15:10:00.190"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-70476","identifiers":["CVE-2026-70476"]},"retained":false,"historicalAffected":[]},{"revision":"d1a6d6d6f6e94feebd0d355910ecb848","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-gmmw-qg98-6j6p","aliases":["CVE-2026-70476"],"title":"Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation","description":"### Summary\nSeveral organization billing endpoints accept attacker-controlled Stripe identifiers (subscriptionId) without verifying that the identifier belongs to the authenticated user's organization. This allows an authenticated attacker to perform unauthorized Stripe subscription operations on other tenants. As a result, an authenticated user can manipulate the Stripe subscription of another organization by supplying a victim organization's subscriptionId.\n\nThis allows attackers to perform unauthorized billing operations such as changing subscription plans or modifying seat quantities, resulting in potential financial impact and service disruption.\n\n\n### Details\nMultiple organization billing endpoints accept subscriptionId directly from user input without validating ownership. The server relies on a client-supplied Stripe subscription identifier rather than resolving the subscription from the authenticated user's organization context.\n\n**File**\n\npackages/server/src/enterprise/routes/organization.route.ts\n\nAffected routes:\n\n```typescript\nrouter.post('/update-additional-seats', organizationController.updateAdditionalSeats)\nrouter.post('/update-subscription-plan', organizationController.updateSubscriptionPlan)\nupdateSubscriptionPlan\n```\n\n**File**\n\npackages/server/src/enterprise/controllers/organization.controller.ts\n\n```typescript\npublic async updateSubscriptionPlan(req: Request, res: Response, next: NextFunction) {\n    const { subscriptionId, newPlanId, prorationDate } = req.body\n\n    const identityManager = getRunningExpressApp().identityManager\n\n    const result = await identityManager.updateSubscriptionPlan(\n        req,\n        subscriptionId,\n        newPlanId,\n        prorationDate\n    )\n\n    return res.status(StatusCodes.OK).json(result)\n}\n```\n\nThe server trusts the user-supplied subscriptionId and forwards it to the Stripe integration layer.\n\nMissing validation:\nsubscriptionId belongs to req.user.activeOrganization\n\nupdateAdditionalSeats\n\n```typescript\npublic async updateAdditionalSeats(req: Request, res: Response, next: NextFunction) {\n    const { subscriptionId, quantity, prorationDate } = req.body\n\n    const identityManager = getRunningExpressApp().identityManager\n\n    const result = await identityManager.updateAdditionalSeats(\n        subscriptionId,\n        quantity,\n        prorationDate\n    )\n\n    return res.status(StatusCodes.OK).json(result)\n}\n```\n\nAgain, the subscriptionId is taken directly from the request body without verifying ownership.\n\n### PoC\nStep 1 - Obtain victim subscriptionId\n\nThis identifier may be obtained via the organization read endpoint or other exposed references.\n\nExample:\n\nsub_YYYYYYYYYYYY\n\nStep 2 - Modify victim subscription\n\n```http\nPOST /api/v1/organization/update-subscription-plan\nHost: target.example.com\nCookie: token=<attacker-session>\nContent-Type: application/json\n\n{\n  \"subscriptionId\": \"sub_YYYYYYYYYYYY\",\n  \"newPlanId\": \"free_plan_id\",\n  \"prorationDate\": 1735689600\n}\n```\n\nStep 3 - Change seat quantity\n\n```http\nPOST /api/v1/organization/update-additional-seats\nHost: target.example.com\nCookie: token=<attacker-session>\nContent-Type: application/json\n\n{\n  \"subscriptionId\": \"sub_YYYYYYYYYYYY\",\n  \"quantity\": 0,\n  \"prorationDate\": 1735689600\n}\n```\n\n### Impact\nAn authenticated attacker can manipulate the Stripe subscription of other organizations.\n\nPossible consequences include:\n\n- Unauthorized subscription upgrades to higher-priced plans\n- Manipulation of paid seat quantities leading to unintended charges\n- Service disruption through plan downgrades\n\nBecause the vulnerability allows cross-tenant manipulation of billing resources, it represents a high-impact authorization flaw.","state":0,"publishedAt":"2026-08-04T19:24:07+00:00","modifiedAt":"2026-08-04T19:41:02.282477+00:00","affected":[{"ecosystem":"npm","name":"flowise","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.1.3"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-gmmw-qg98-6j6p","https://github.com/FlowiseAI/Flowise/pull/6321","https://github.com/FlowiseAI/Flowise/commit/4d7899d02ca370a5510406be5c91483085a412f9","https://github.com/FlowiseAI/Flowise","https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"],"sourceUrl":"https://github.com/advisories/GHSA-gmmw-qg98-6j6p","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-gmmw-qg98-6j6p","identifiers":["GHSA-gmmw-qg98-6j6p","CVE-2026-70476"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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