Vulnerability in Flowise
CVE-2025-71334
Flowise before 3.0.6 (affected versions 2.2.8 and earlier) contains an arbitrary file access vulnerability due to missing validation that the chatflowId and chatId parameters are UUIDs or numbers in file handling operations. By supplying a path-traversal value (e.g., '../../../../../tmp') as the chatflow id, an unauthenticated attacker can use the /api/v1/chatflows endpoint (via addBase64FilesToStorage) to write arbitrary files, and the /api/v1/get-upload-file and /api/v1/openai-assistants-file/download endpoints (via streamStorageFile) to read arbitrary files. Arbitrary file write may lead to remote code execution.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.044 (90.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.044 · newest: 0.044 · change: 0.000
Affected products
- Flowise — versions 0, 3.0.6
- Flowiseai Flowise
Weakness classification (CWE)
References
- github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849 (Exploit, vendor-advisory, Vendor Advisory)
- github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f (Patch, patch)
- github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441016b2234f220ac7 (Patch, patch)
- www.vulncheck.com/advisories/flowise-arbitrary-file-access-via-missing-chat-flo… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2025-71334?
- CVE-2025-71334 is a critical-severity vulnerability in Flowise, classified under External Control of File Name or Path. CVSS score: 9.8/10. Published 2026-06-25.
- How severe is CVE-2025-71334?
- Critical severity. CVSS v3 base score is 9.8 out of 10.