Auth bypass in Flowiseai Flowise
CVE-2026-70476
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
EPSS: 0.005 (44.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Flowiseai Flowise — versions < 3.1.2
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-gmmw-qg98-6j6p (Exploit, Vendor Advisory)
- github.com/FlowiseAI/Flowise/pull/6321 (Patch, Issue Tracking)
- github.com/FlowiseAI/Flowise/commit/4d7899d02ca370a5510406be5c91483085a412f9 (Patch)
- github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-70476?
- CVE-2026-70476 is a high-severity vulnerability in Flowiseai Flowise, classified under Improper Access Control. CVSS score: 8.2/10. Published 2026-08-04.
- How severe is CVE-2026-70476?
- High severity. CVSS v3 base score is 8.2 out of 10.