Description
IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow instance; when NEW_USER_IS_ACTIVE=true (documented deployment option), newly created accounts are immediately active and can authenticate to reach RCE endpoints, bypassing the need for AUTO_LOGIN.
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/7278929 vendor-advisory patch