Description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.0.19, an attacker can send a /api/v1/files/upload/ request without any authentication token/cookies and abuse a very long multipart form boundary to make the langflow app unusable for all users for an indefinite amount of time. This vulnerability is fixed in 1.0.19.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| langflow-ai | langflow | < 1.0.19 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | langflow | < 1.0.19 | 1.0.19 | GHSA-qwqc-p3q8-wcg9 |
Advisories 1
- WID-SEC-2026-2030 Langflow: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 7, 2026