IBM Langflow OSS 1.0.0-1.9.3 RCE: code exec via public flow tool_code
CVE-2026-10134 Published on June 30, 2026
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abuse cloud metadata endpoints, laterally move to other tenants on the same Langflow instance, and Establish persistence by modifying the public flow's `tool_code` so normal `/api/v1/build/...` calls by any user re-execute attacker code at each build.
Vulnerability Analysis
CVE-2026-10134 is exploitable 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 a Code Injection Vulnerability?
The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
CVE-2026-10134 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-10134
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.9.3 is affected.