| Component | Langflow |
| Severity | medium (CVSS 6.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| Published (NVD) | 2026-04-30 |
| Last modified | 2026-06-17 |
| Affected versions | langflow >= 1.0.0, < 1.9.0 |
| Fixed in | 1.9.0 |
| Weakness | CWE-639 |
| CISA KEV | not listed |
NVD description
IBM Langflow OSS 1.0.0 through 1.8.4 could allow any user to supply a flow_id to read transaction logs and vertex build data belonging to other users, and to delete persisted vertex build data for another user's flow.
What to do
- Upgrade Langflow to
1.9.0or later. - 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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