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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| langflow-ai | langflow | < 1.9.2 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
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lukehebe/IBM-Langflow-CVE-2026-48519-poc ★ 0 · Sep 22, 2026
CVE-2026-48519 pre-auth rce poc in IBM langflow <= 1.9.1
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | langflow | < 1.9.2 | 1.9.2 | GHSA-v5ff-9q35-q26f |
Advisories 1
- WID-SEC-2026-1713 Langflow: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 23, 2026