CVE-2026-48519: 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…

PriorityP358critical9.6CVSS 3.1

AVNACLPRNUIRSCCHIHAH

EPSS

0.82%

54.3th percentile

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

3 ranges

Vendor	Product	Version range	Fixed in
langflow-ai	langflow	< 1.9.2	1.9.2
langflow	langflow	< 1.9.2	1.9.2
langflow	langflow	>= 0 < 1.9.2	1.9.2

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