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Critical Langflow Flaws Could Let Unauthenticated Attackers Run Code on Servers

thehackernews.com 2026-11-02 AI supply chain Critical
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Executive Summary

Critical vulnerabilities in the open-source Langflow tool could let attackers without accounts bypass authentication or execute arbitrary code on servers. Organizations using Langflow to build AI agents or workflows should identify affected versions and upgrade to 1.13.0.

What Happened

Two critical flaws in Langflow could let a remote attacker with no account bypass authentication or run arbitrary code, IBM said last week. Langflow is an open-source tool for building AI agents and workflows, and its vulnerability reports go to IBM. Every release from 1.0.0 through 1.12.8 has the flaws, and the only fix is version 1.13.0. Neither flaw is in CISA's Known

Affected Products

  • Langflow
  • IBM

Vulnerability / Attack Technique

Unauthenticated authentication bypass and arbitrary code execution

Technical Mechanism

The article states that two critical flaws allow a remote attacker with no account to bypass authentication or run arbitrary code. It does not provide further technical details about the vulnerability mechanics.

AI Security Category

LLM03:2025 Supply Chain

Part of the AI Supply Chain and AI SBOM topic.

Relevant Frameworks

LLM03:2025 Supply ChainMITRE ATLAS: Initial AccessMITRE ATLAS: Execution

RealGround Analysis

Langflow is an AI-agent and workflow-building tool, so compromise of the platform could affect the servers hosting agent workflows. The reported unauthenticated access and code-execution capabilities make software inventory, version control, and adversarial validation important for teams operating AI applications.

Recommended Controls

  • Inventory Langflow deployments and verify whether any instance runs a version from 1.0.0 through 1.12.8.
  • Upgrade affected Langflow instances to version 1.13.0.
  • Restrict network access to Langflow administration and workflow interfaces.
  • Monitor authentication and server activity for unexpected access or command execution.
  • Include Langflow and other AI application dependencies in an AI agent SBOM and vulnerability-management process.

Related RealGround Service

AI Agent SBOM and LLM Mapping · or start with the free AI Agent Security Scanner.

Sources

thehackernews.com: https://thehackernews.com/2026/11/critical-langflow-flaws-could-let.html

Summary and analysis written by RealGround from the source above; last updated 2026-11-03.

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