High · 8.8 CVE-2026-19298 EUVD-2026-71598GHSA-qjf8-5fwj-jhh8

Langflow is vulnerable to remote code execution due to authorization policy bypass in the authenticated flow-build endpoint

Published Sep 4, 2026 · Updated Sep 10, 2026 · Assigned by ibm

Description

IBM Langflow OSS 1.0.0 through 1.11.2 could allow a remote authenticated attacker to execute arbitrary code due to an authorization bypass in the flow build process.

Affected products

Vendor	Product	Affected	Fixed
IBM	Langflow OSS	1.0.0 – ≤ 1.11.2	—

Advisories 1

WID-SEC-2026-3096 Langflow OSS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 14, 2026

References

https://www.ibm.com/support/pages/node/7285640 vendor-advisory patch