vulnerability · Wed 07 Oct 2026 · 20:35 UTC
GHSA-4hmc-cfm3-w43c: Langflow has Authenticated Cross-Project File Disclosure via Unscoped MCP Resource Handlers
Filed UTCSource GTH ↗
Langflow's project-scoped MCP transport authenticates the caller for the project_id in the connection URL, but the subsequent resources/read operation does not authorize the resource URI being requested. An authenticated user can connect to their own project-scoped MCP endpoint and supply a crafted file-download URI that points to another user's flow-backed file. The server then reads and returns the victim file without verifying ownership or project membership. …
Signals
as the pipeline stamped them- High
- High-risk vulnerability
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-105699 | — | 0.25% | NVD ↗ |
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