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.
Fix
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f Patch
- https://github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441016b2234f220ac7 Patch
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849 Exploit, Vendor Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.3 · flowiseaiNVD modified 2026-10-12 21:10
Affected (CPE criteria) 1
cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*
References 5
- https://github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f Patch
- https://github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441016b2234f220ac7 Patch
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849 Exploit, Vendor Advisory
- https://www.vulncheck.com/advisories/flowise-arbitrary-file-access-via-missing-chat-flow-id-validation Third Party Advisory
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849 Exploit, Vendor Advisory