CVE-2026-18904: Authorization Bypass Through User-Controlled Key

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers...

CVE-2026-19294: Authorization Bypass Through User-Controlled Key

IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote authenticated attacker to execute and read any user's private flow due to improper authorization...

PT-2026-83330

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.1 Description A path traversal issue exists that could allow a remote attacker to read arbitrary files from the system. Path traversal is a flaw that allows an attacker to access files and directori...

PT-2026-83328

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.1 Description Remote authenticated attackers can execute arbitrary code due to improper control over the generation of code. Recommendations At the moment, there is no information about a newer...

CVE-2026-18545: Server-Side Request Forgery (SSRF)

IBM Langflow OSS 1.0.0 through 1.11.1 is vulnerable to server-side request forgery SSRF. This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks...

PT-2026-83332

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.1 Description Improper enforcement of security restrictions on the 'A2A' public endpoint allows a remote attacker to execute arbitrary code. Arbitrary code execution occurs when an attacker can run...

Security Bulletin: Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities

Summary Langflow contains multiple vulnerabilities in its authentication, authorization, and network request controls across several API surfaces. The MCP project authentication function omits the default authtype=none value from the set of modes requiring an API key, causing unauthenticated...

Security Bulletin: Langflow is affected by security vulnerabilities in Model Context Protocol features

Summary Langflow uses Model Context Protocol MCP features to manage external server connections, project access, file resources, and local client integration. Weaknesses in MCP command and configuration validation, authentication and authorization enforcement, file resource handling, and request...

Security Bulletin: Langflow OSS is affected by server-side request forgery in provider validation and API request functionality

Summary Langflow OSS includes outbound network request functionality for provider validation and API request execution. Weaknesses in request destination validation and enforcement could allow authenticated users to induce requests to unintended internal or external network locations, which may...

Security Bulletin: Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

Summary Langflow OSS supports custom Python components and validation of component code for component development workflows. Weaknesses in custom component execution paths, validation endpoints, and trusted template enforcement could allow authenticated users to execute arbitrary Python code or...

Security Bulletin: Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

Summary Langflow OSS supports Agentic Assistant generated components and user-supplied custom Python components for workflow development. Weaknesses in code security scanning, runtime validation, custom component execution paths, and trusted code enforcement could allow authenticated users to...

Security Bulletin: Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement

Summary Langflow contains multiple vulnerabilities that allow arbitrary Python and operating system command execution on the server. The PythonFunction component lacks the runtime code-execution gate applied to other code-execution components, enabling an authenticated user to bypass the...

PT-2026-83334

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.11.1 Description An authenticated attacker can execute arbitrary operating system commands within the server process. This occurs by saving a flow containing a crafted value in the type field and...

Langflow 1.10.0 Remote Code Execution

Langflow versions 1.10.0 and below are susceptible to unauthenticated remote code execution. By chaining /api/v1/autologin with /api/v1/validate/code, a remote unauthenticated attacker can send crafted HTTP requests to execute arbitrary code. frozenstringliteral: true This module requires...

Exploit for Code Injection in Langflow

CVE-2026-9198 - IBM Langflow OSS Unauthenticated Remote Code...

Exploit for Eval Injection in Langflow

CVE-2026-33017 Langflow RCE ★ CVE-2026-33017 Langflow Remote...

Exploit for Path Traversal in Langflow

This post is a research article published by EQSTLabhttps://g...

CVE-2026-19875

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint...

CVE-2026-19875 Unauthenticated Registration POST Endpoint Permits Admin Email Overwrite and Outbound Relay Abuse in Langflow

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint...

CVE-2026-19875 Unauthenticated Registration POST Endpoint Permits Admin Email Overwrite and Outbound Relay Abuse in Langflow

IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to overwrite administrator email information and abuse the server as an outbound relay due to missing authentication for the registration endpoint...