Auth bypass in Flowiseai Flowise
CVE-2026-70473
Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to 3.1.3, Flowise GET /api/v1/upsert-history returns the entire server-wide upsert history instead of being scoped to the requesting user, tenant, or workspace. The response can exceed 100MB and includes sensitive configuration data, including Vector Store settings such as Qdrant Server URL and collection name. The observed behavior indicates missing or insufficient authorization checks, workspace/project/tenant isolation, and pagination or limits, exposing integration parameters and infrastructure details that may enable further targeted attacks. This issue is fixed in version 3.1.3.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (39.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.2% 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 < 3.1.3
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-fr6g-7cq8-fg82 (Exploit, Vendor Advisory)
- github.com/FlowiseAI/Flowise/pull/6170 (Patch, Issue Tracking)
- github.com/FlowiseAI/Flowise/commit/d81483b70c997ddf981acc9c49fbd9a02fa345cd (Patch)
- github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-70473?
- CVE-2026-70473 is a high-severity vulnerability in Flowiseai Flowise, classified under Information Disclosure. CVSS score: 8.5/10. Published 2026-08-04.
- How severe is CVE-2026-70473?
- High severity. CVSS v3 base score is 8.5 out of 10.