EXECUTIVE SUMMARY:
CVE-2026-48519 with a CVSS score of 9.6 is a critical remote code execution flaw in the Langflow AI orchestration platform, affecting all releases up to version 1.9.1. The vulnerability stems from an access‑control oversight in the Shareable Playground feature, where the server accepts a JSON‑encoded workflow definition from unauthenticated users and directly injects the supplied Python script into a data‑node parameter without sanitisation. An attacker can craft a malicious JSON payload and POST it to the backend routing endpoint that processes shared playground links, requiring only network‑level access to the public URL; no authentication or prior foothold is needed. Once the payload is executed, the attacker gains the ability to run arbitrary Python code on the host, effectively achieving full system compromise and data exfiltration. Business consequences include loss of intellectual property, disruption of AI pipelines, and potential lateral movement within the corporate network. Exploitation is possible whenever the shareable playground endpoint is exposed to the internet and the platform processes unvalidated workflow submissions, making any publicly accessible deployment a high‑risk target.[/subscribe_to_unlock_form]
EXECUTIVE SUMMARY:
CVE-2026-48519 with a CVSS score of 9.6 is a critical remote code execution flaw in the Langflow AI orchestration platform, affecting all releases up to version 1.9.1. The vulnerability stems from an access‑control oversight in the Shareable Playground feature, where the server accepts a JSON‑encoded workflow definition from unauthenticated users and directly injects the supplied Python script into a data‑node parameter without sanitisation. An attacker can craft a malicious JSON payload and POST it to the backend routing endpoint that processes shared playground links, requiring only network‑level access to the public URL; no authentication or prior foothold is needed. Once the payload is executed, the attacker gains the ability to run arbitrary Python code on the host, effectively achieving full system compromise and data exfiltration. Business consequences include loss of intellectual property, disruption of AI pipelines, and potential lateral movement within the corporate network. Exploitation is possible whenever the shareable playground endpoint is exposed to the internet and the platform processes unvalidated workflow submissions, making any publicly accessible deployment a high‑risk target.[emaillocker id="1283"]
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REFERENCES:
The following reports contain further technical details:
https://securityonline.info/langflow-rce-vulnerability-shareable-playground/