CVE-2025-71333

Flowise - Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpoint

State: Published
Severity: 9.3 Critical
Published: Jun 25, 2026
Updated: Jun 27, 2026
Reserved: Jun 20, 2026

Description

Flowise through 2.2.4 contains an unauthenticated arbitrary file upload vulnerability in the /api/v1/attachments endpoint when storageType is set to local. Attackers can exploit path traversal in the chatId and chatflowId parameters to upload malicious files to arbitrary directories, potentially enabling remote code execution and server compromise.

Scores

CVSS	Score	Vector	Source
4.0	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	VulnCheck

Weaknesses

CWE-73 External Control of File Name or Path

Affected Products

Product	Versions
FlowiseFlowise	2.2.4 and earlierAffected

References

GitHub Security Advisory (GHSA-h42x-xx2q-6v6g)vendor-advisory
VulnCheck Advisory: Flowise - Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpointthird-party-advisory

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