Vulnerability 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Langflow | Langflow | < 1.9.2 |
Related Weaknesses (CWE)
References
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-v5ff-9q35-q26fExploitVendor Advisory
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-v5ff-9q35-q26fExploitVendor Advisory
FAQ
What is CVE-2026-48519?
CVE-2026-48519 is a vulnerability with a CVSS score of 9.6 (CRITICAL). 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 P...
How severe is CVE-2026-48519?
CVE-2026-48519 has been rated CRITICAL with a CVSS base score of 9.6/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-48519?
Check the references section above for vendor advisories and patch information. Affected products include: Langflow Langflow.