Auth bypass in Flowiseai Flowise
CVE-2026-70475
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the PUT /api/v1/executions/:id endpoint in packages/server/src/routes/executions/index.ts lacks the checkAnyPermission() middleware that protects other execution endpoints. Any authenticated user, regardless of assigned permissions, can modify execution state, data, and metadata of any execution in their workspace, enabling privilege escalation and manipulation of workflow execution results. This issue is fixed in 3.1.3.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.7% 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-fm2f-4339-4p2f (Vendor Advisory)
- github.com/FlowiseAI/Flowise/pull/6409 (Patch, Issue Tracking)
- github.com/FlowiseAI/Flowise/commit/96a9b23b5a103b362a0ee1368d04636755be1bed (Patch)
- github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3 (Release Notes)
Frequently asked questions
- What is CVE-2026-70475?
- CVE-2026-70475 is a medium-severity vulnerability in Flowiseai Flowise, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-08-04.
- How severe is CVE-2026-70475?
- Medium severity. CVSS v3 base score is 6.5 out of 10.