| Component | Langflow |
| Severity | critical (CVSS 10) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| Published (NVD) | 2026-06-22 |
| Last modified | 2026-06-26 |
| Affected versions | langflow >= 1.0.0, <= 1.9.3 |
| Fixed in | see the vendor advisory |
| Weakness | CWE-94 |
| CISA KEV | not listed |
NVD description
IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compromise
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep Langflow off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
Read more
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