High · 7.5 CVE-2026-18899 EUVD-2026-67954GHSA-4w6q-3qxv-hmwg

Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

Published Aug 28, 2026 · Updated Sep 1, 2026 · Assigned by ibm

Vendor: IBM Product: Langflow OSS

Description

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to read arbitrary files due to path traversal.

Affected products

Vendor	Product	Affected	Fixed
IBM	Langflow OSS	1.0.0 – ≤ 1.11.1	—

Advisories 1

WID-SEC-2026-2965 Langflow OSS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 30, 2026

References

https://www.ibm.com/support/pages/node/7284579 vendor-advisory patch