CVE-2025-71334
9.8
CRITICAL · CVSS 3.1 · EPSS 4.4% (pctl 91)
In your normal cycle
Critical by CVSS (9.8), but no sign of active exploitation.
Description
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.36% — more likely to be exploited than 91% of all CVEs |
| Weakness | CWE-73 |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2026-06-25 |
| Last modified | 2026-09-30 |
Affected (1)
| Vendor | Product |
|---|---|
| flowiseai | flowise |
References
- https://github.com/FlowiseAI/Flowise/commit/8bd3de41533de78e4ef6c980e5704a1f9cb7ae6f
- https://github.com/FlowiseAI/Flowise/commit/c2b830f279e454e8b758da441016b2234f220ac7
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849
- https://www.vulncheck.com/advisories/flowise-arbitrary-file-access-via-missing-chat-flow-id-validation
- https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-q67q-549q-p849
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