IBM Langflow OSS 1.0.0-1.12.4 Remote Exec via Public Workflow Python Component
CVE-2026-18894 Published on October 29, 2026
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote attacker to trigger pre-existing stored Python component code in a public workflow, executing it under the flow owner's runtime context within the server process. This bypasses the intended trust boundary where public execution paths are restricted to server-trusted component code.
Vulnerability Analysis
CVE-2026-18894 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 have a small impact on confidentiality and integrity, and no impact on availability.
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-2026-18894 has been classified to as a Code Injection vulnerability or weakness.
Products Associated with CVE-2026-18894
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Affected Versions
IBM Langflow OSS:- Version 1.0.0, <= 1.12.4 is affected.