Home

Description

Flowise contains a path traversal vulnerability in the /api/v1/document-store/loader/process endpoint that allows unauthenticated attackers to write arbitrary files to the filesystem. Attackers can exploit unsanitized fileName parameters with ../ sequences to overwrite critical files like package.json and achieve remote code execution when the application restarts.

PUBLISHED Reserved 2026-06-20 | Published 2026-06-25 | Updated 2026-06-26 | Assigner VulnCheck




CRITICAL: 10.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Problem types

External Control of File Name or Path

Product status

Default status
affected

Any version
affected

Credits

pyozzi-toss reporter

References

github.com/...lowise/security/advisories/GHSA-8vvx-qvq9-5948 exploit

github.com/...lowise/security/advisories/GHSA-8vvx-qvq9-5948 (GitHub Security Advisory (GHSA-8vvx-qvq9-5948)) vendor-advisory

www.vulncheck.com/...e-code-execution-via-document-store-api (VulnCheck Advisory: Flowise - Arbitrary File Write to Remote Code Execution via document-store API) third-party-advisory

cve.org (CVE-2025-71338)

nvd.nist.gov (CVE-2025-71338)

Download JSON