Critical Langflow Flaws Could Let Unauthenticated Attackers Run Code on Servers

November 2, 2026 1 Min Read 0

Threat Intelligence Brief

Curated summary with source attribution

Source: thehackernews.com

Threat Risk: High
Victim: Organizations utilizing Langflow for AI workflow orchestration
Incident: Discovery of multiple critical vulnerabilities allowing unauthenticated RCE and authentication bypass in Langflow.
Impact: Full server compromise and unauthorized execution of arbitrary code.
Attacker: Unidentified threat actors
Analysis: IBM has identified multiple critical vulnerabilities in Langflow, including an authentication bypass and remote code execution. The risk is heightened by a default ‘auto-login’ feature in older versions that grants superuser access without credentials. The existence of a Metasploit module for the authentication bypass indicates that the flaws are readily exploitable.
Recommendations: Immediately upgrade Langflow to version 1.13.0 or later; Disable the LANGFLOW_AUTO_LOGIN setting in all production environments; Audit server logs for unauthorized access to Model Context Protocol (MCP) endpoints
Source: The Hacker News

Editorial note: this post summarizes third-party reporting and links to the original source.
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