IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting.
Date: 2026-04
Affected: langflow/langflow_desktop
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-3346
CWE: CWE-89
CVSS: 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)

IBM Langflow Desktop 1.6.0 through 1.8.4 Lanflow is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.


Mitigations:

Architectural layers (MAESTRO):