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critical vulnerability

Langflow: PythonREPLComponent executes unsandboxed Python code, enabling authenticated RCE and privilege escalation

Fix availableCritical · CVSS 9.9EPSS 0.82%

Published Oct 6, 2026 · updated Oct 8, 2026

What to do

  1. Upgrade to a fixed version: langflow 1.10.1.
  2. Redeploy and restart long-running processes so they load the fixed code.

Affected packages

PyPIlangflow

Vulnerable versions
< 1.10.1
Fixed in
1.10.1

Check your project: pip show langflow

Sources

CWE-94 Improper Control of Generation of Code ('Code Injection') · CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') · CWE-266 Incorrect Privilege Assignment

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