📄 Langflow 1.8.4 File Write / Traversal / Remote Code Execution

Langflow versions 1.8.4 and below have an issue where the POST /api/v2/files endpoint does not sanitize the filename parameter from the multipart form data, allowing an attacker to write files to arbitrary locations on the filesystem using path traversal sequences. When Langflow runs with...

📄 Langflow 1.8.1 Remote Code Execution

This Metasploit auxiliary module scans Langflow instances for CVE-2026-33017, an unauthenticated remote code execution vulnerability affecting versions 1.8.1 and below. ================================================================================================================================...

📄 Langflow 1.8.1 Remote Code Execution

This Python script is a multi-threaded tool targeting a suspected vulnerability in Langflow versions 1.8.1 and below that allows unauthenticated remote code execution through unsafe execution of CustomComponent code during flow compilation...

CVE-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 code, the...

CVE-2026-34046

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enable...

Arbitrary Code Injection

Langflow is vulnerable to Arbitrary Code Injection. The vulnerability is due to the validation process dynamically executing LLM‑generated Python code via exec, where the validation routine runs the generated code and an attacker who can influence the model output can achieve arbitrary server‑sid...

Improper Authorization

Langflow is vulnerable to an Improper Authorization. The vulnerability is due to improper access control in the readflow helper, which failed to enforce ownership validation when authentication was enabled, allowing an authenticated attacker to read, modify, or delete flows belonging to other...

CVE-2026-34046

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enable...

CVE-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 code, the...

PYSEC-2026-82

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...

PYSEC-2026-82

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...

CVE-2026-34046

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enable...

CVE-2026-34046 Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enable...

CVE-2026-34046

Summary : CVE-2026-34046 affects Langflow prior to 1.5.1, where the _read_flow) path could bypass ownership checks when AUTO_LOGIN was false, allowing any authenticated user to read, modify, or delete flows owned by others, potentially exposing embedded plaintext API keys. Affected component : La...

CVE-2026-34046 Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.5.1, the readflow helper in src/backend/base/langflow/api/v1/flows.py branched on the AUTOLOGIN setting to decide whether to filter by userid. When AUTOLOGIN was False i.e., authentication was enable...

CVE-2026-33873

CVE-2026-33873 affects Langflow. Before v1.9.0, the Agentic Assistant feature can execute LLM-generated Python code during its validation phase, reaching dynamic execution sinks and instantiating the generated class server-side. In deployments where an attacker can access the Agentic Assistant an...

CVE-2026-33873 Langflow has Authenticated Code Execution in Agentic Assistant Validation

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...

CVE-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 code, the...

CVE-2026-33873 Langflow has Authenticated Code Execution in Agentic Assistant Validation

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...

CVE-2026-33873 Langflow has Authenticated Code Execution in Agentic Assistant Validation

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...