CVE-2025-71334
Flowise - Arbitrary File Access via Missing Chat Flow ID Validation
CRITICAL 9.3EPSS 4.4%
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.
- Affected
- Flowise
- CVSS v4.0 VULNCHECK
- 9.3 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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 - CVSS v3.1 VULNCHECK
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 4.36% chance of exploitation in the next 30 days, 91st percentile
- Nuclei
- critical · CWE-73
- Published
- 2026-06-25
- Updated
- 2026-06-26
Nuclei templates (1)
Security advisories
- FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849
- https://www.vulncheck.com/advisories/flowise-arbitrary-file-access-via-missing-chat-flow-…
- FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f