IBM Langflow OSS 1.0.0-1.11.5 Unauth Remote Code Exec via Public MCP Endpoints
CVE-2026-85025 Published on September 10, 2026
Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an unauthenticated attacker to execute arbitrary code and access or modify chat sessions through publicly shared MCP project endpoints due to improper enforcement of public-flow security restrictions and session isolation controls.
Vulnerability Analysis
CVE-2026-85025 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2026-85025 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-85025
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.11.5 is affected.