| Component | Langflow |
| Severity | critical (CVSS 9.6) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| Published (NVD) | 2026-06-23 |
| Last modified | 2026-06-26 |
| Affected versions | langflow < 1.9.2 |
| Fixed in | 1.9.2 |
| Weakness | CWE-94 |
| CISA KEV | not listed |
NVD description
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to 1.9.2, the "Shareable Playground" (or "Public Flows" in code) contains a critical RCE vulnerability. Shareable Playground feature works by enabling the execution of workflows by unauthenticated users, by accessing a link. Specifically, it enables the route /api/v1/build_public_tmp to execute any public flow, given a public flow ID. When the route executes the flow, it allows for providing arbitrary custom Python code as the nodes code, inside the JSON payload. The vulnerable field is data.nodes[X].data.node.template.code.value. This vulnerability is fixed in 1.9.2.
What to do
- Upgrade Langflow to
1.9.2or 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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