CVE-2026-33873
Langflow is a tool for building and deploying AI-powered agents and workflows.
Published Mar 27, 2026 · updated Jun 17, 2026 · langflow langflow
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments where an attacker can access the Agentic Assistant feature and influence the model output, this can result in arbitrary server-side Python execution. Version 1.9.0 fixes the issue.
Code
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Timeline
Detection, updates, and resolution for this record.
Mar 27, 2026 · NIST NVD
Detected
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments
Jun 17, 2026 · NIST NVD
Updated
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments
Affected
- cpe langflow/langflowversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-33873
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-33873
Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component co
nvd.nist.gov