Description
IBM Langflow OSS 1.0.0 through 1.10.0 allows an authenticated attacker to create a malicious flow pointing to an attacker-controlled URL that returns a specially crafted Content-Disposition header (e.g., filename="../../../target/path" ), enabling arbitrary file write operations with attacker-controlled content to any path accessible by the Langflow process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| IBM | Langflow OSS | 1.0.0 – ≤ 1.10.0 | — |
Advisories 2
- WID-SEC-2026-2410 IBM Langflow Desktop OSS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 4, 2026
- NCSC-2026-0251 Kwetsbaarheden verholpen in IBM Langflow OSS NCSC-NL (Netherlands) · Jul 21, 2026
References
- https://www.ibm.com/support/pages/node/7278931 vendor-advisory patch