Path traversal in Flowise - #VU126235
Published: April 15, 2026
Vulnerability identifier: #VU126235
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to write files to arbitrary locations on the server filesystem.
The vulnerability exists due to path traversal in the Faiss and SimpleStore vector store implementations when handling a user-controlled basePath parameter during vector store insertion. A remote user can send a specially crafted request with a malicious basePath value to write files to arbitrary locations on the server filesystem.
Exploitation requires a valid API token with documentStores:upsert-config permission, an existing Document Store with at least one processed chunk, and valid embedding provider credentials.
Affected software
Flowise
Remediation
Install security update from vendor's website.
Flowise - update to 3.1.0