critical9.6
CVE-2026-48519
Langflow is a tool for building and deploying AI-powered agents and workflows.
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | langflow | <= 1.9.1 | 1.9.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Langflow | Langflow | before 1.9.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-v5ff-9q35-q26f
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-v5ff-9q35-q26f
- https://nvd.nist.gov/vuln/detail/CVE-2026-48519
- https://github.com/pypa/advisory-database/tree/main/vulns/langflow/PYSEC-2026-243.yaml