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Critical 9.8CVE-2026-93680 Public exploit
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.8 could allow a remote attacker to bypass security restrictions due to improper authentication.
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Critical 9.8
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.3 could allow a remote attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command.
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Critical 9.9CVE-2026-107327 Public exploit
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to execute arbitrary code due to missing authorization.
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Critical 9.9CVE-2026-107328 Public exploit
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of code in eval/exec.
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Critical 9.9CVE-2026-107329 Public exploit
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.4 could allow a remote authenticated attacker to execute arbitrary code due to improper control of code generation.
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Critical 9.8CVE-2026-110186 Public exploit
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.8 could allow a remote attacker to execute arbitrary code due to improper control of code generation.
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Critical 9.8
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command.
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Critical 9.8
Langflow OSS is affected by multiple vulnerabilities
IBM Langflow OSS 1.0.0 through 1.12.2 could allow a remote attacker to execute arbitrary code due to improper control of code generation.
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Critical 9.6
Incomplete Security Scanner Blocklist Enables Network-Based Code Execution
IBM Langflow OSS 1.0.0 through 1.10.0 can allow attackers to execute arbitrary Python code with root privileges (UID=0) on the Langflow server by submitting components containing socket or urllib imports. This enables: (1) AWS credential theft via IMDSv1 SSRF…
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Critical 9.8
Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary OS commands due to improper neutralization of special elements used in an OS command.
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Critical 9.8
Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
IBM Langflow OSS 1.0.0 through 1.11.5 could allow a remote attacker to execute arbitrary code due to code injection during graph construction.
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Critical 9.8
Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards
IBM Langflow OSS 1.0.0 through 1.11.5 Langflow could allow an unauthenticated attacker to execute arbitrary code and access or modify chat sessions through publicly shared MCP project endpoints due to improper enforcement of public-flow security restrictions …
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Critical 9.9CVE-2026-19295 Public exploit
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
IBM Langflow OSS 1.0.0 through 1.11.1 allows an authenticated attacker to execute arbitrary operating system commands in the server process by saving a flow with a crafted type field value and triggering a build of a wrapper flow that references it. This allo…
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Critical 9.8CVE-2026-19286 Public exploit
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to execute arbitrary code due to improper enforcement of security restrictions on the A2A public endpoint.
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Critical 9.1
Insufficient Authentication Brute Force Protection on Login Endpoint
IBM Langflow OSS 1.0.0 through 1.9.6 could allow a remote attacker to obtain unauthorized access to user accounts due to improper restriction of excessive authentication attempts.
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Critical 9.9
Remote Code Execution in CUGA Component CodeAgent
IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to inject arbitrary code on the system, due to the improper control of user input code.
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Critical 9.9
Python Interpreter Sandbox Bypass Leading to Sensitive Data Exposure
IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation.
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Critical 9.8CVE-2026-12940 Public exploit
Langflow is affected by remote code execution due to multiple unauthenticated and insufficiently authorized API endpoints
IBM Langflow OSS 1.0.0 through 1.10.1 are vulnerable to unauthenticated remote code execution via environment variable injection in the MCP (Model Context Protocol) stdio launcher. The vulnerability exists in src/lfx/src/lfx/base/mcp/util.py where the DANGER…
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Critical 9.8
Langflow is affected by remote code execution, denial of service, path traversal, and exposed credentials due to multiple unauthenticated and insufficiently authorized API endpoints
IBM Langflow OSS 1.0.0 through 1.10.1 contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data.
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Critical 9.9
Disk Cache Deserialization Remote Code Execution Vulnerability
IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the disk-based caching mechanism. The AsyncDiskCache class uses Python's unsafe pickle.loads() function to deserialize cached objects from disk without validation,…
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Critical 9.9
Remote Code Execution via Code Validation Endpoint
IBM Langflow OSS 1.0.0 through 1.10.0 contain a critical remote code execution vulnerability in the code validation API endpoint. The POST /api/v1/validate/code endpoint accepts user-supplied Python code and executes it directly using Python's built-in exec()…
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Critical 9.8
Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution
IBM Langflow OSS 1.0.0 through 1.10.0 has a vulnerability in Langflow's webhook authentication logic allows unauthenticated users to trigger the execution of any flow. The system incorrectly bypasses API key validation when the WEBHOOK_AUTH_ENABLE configurati…
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Critical 9.9
Arbitrary Code Execution in Python Interpreter Component
IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated users to escalate privileges to superuser by directly manipulating the database, execute arbitrary system commands, and achieve full system compromise with Langflow service permissions.
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Critical 9.9
Path Traversal in APIRequest Component via Content-Disposition Header
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow an attacker to write arbitrary files to unintended locations due to improper input validation in the APIRequest component. A path traversal vulnerability exists when the "Save to File" feature is enab…
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Critical 9.8CVE-2026-9103 Scanner template
Unauthenticated Superuser Token Issuance via Auto-Login Endpoint
IBM Langflow OSS 1.0.0 through 1.10.0 could allow a remote attacker to gain unauthorized access due to improper authentication in the /api/v1/login/auto_login endpoint. The endpoint issues long-lived superuser bearer tokens without requiring authentication wh…
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Critical 9.9
Policies Component Dynamic CodeInput Fields Bypass Custom Component Validation
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow versions up to 1.9.2 (commit 94981c443d4918517b9e8163d70fc598dc33a32d) contain a code injection vulnerability in the Policies component's ToolGuard integration that bypasses the allow_custom_components=false secu…
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Critical 9.8
Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments
KEV Aug 4, 2026 -
Critical 9.8
Unauthenticated User Registration Could Lead to Remote Code Execution
IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to create unlimited user accounts on any Langflow instance; when NEW_USER_IS_ACTIVE=true (documented deployment option), newly created accounts are immediately active and can authenticate …
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Critical 10.0CVE-2026-10134 Public exploit
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
IBM Langflow OSS 1.0.0 through 1.9.3 allows an attacker to read every secret available to the Langflow process, read and modify every flow, conversation, message, file upload, and saved component in the Langflow database, can connect to internal services, abu…
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Critical 9.6
Cross-Tenant API Key Reuse and Billing Fraud in Langflow Voice Mode Subsystem
IBM Langflow OSS 1.0.0 through 1.10.0 voice mode contains improper shared-state handling that allows reuse of API clients across tenant boundaries. An authenticated attacker can manipulate cache state to cause requests from other users to be processed using i…
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Critical 9.1
Unauthenticated Cross-User MCP Resource Access and Tool Execution via Streamable Transport Authorization Bypass
IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.
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Critical 9.8
Flow Validation Bypass via Empty Component Type Field
IBM Langflow OSS 1.0.0 through 1.10.0 could allow arbitrary code execution due to improper validation of flow nodes with missing or empty component type fields.
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Critical 9.8
Insecure Deserialization in Redis Cache Backend
IBM Langflow OSS 1.0.0 through 1.10.0 allows users with Redis access to execute arbitrary code with full application privileges, compromising all secrets, data, and system integrity.
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Critical 9.9
Code Injection Vulnerability in Code Validation Endpoint
IBM Langflow OSS 1.0.0 through 1.10.0 allows authenticated attackers to execute arbitrary OS commands and read sensitive files including credentials, enabling complete system compromise and lateral movement.
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Critical 9.1
Weak Cryptographic Key Derivation Exposed All Stored Credentials
IBM Langflow OSS 1.0.0 through 1.10.0 Langflow could allow disclosure of all stored credentials due to the use of a weak and reversible key derivation mechanism for encryption at rest.
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Critical 9.8
Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS
IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.
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Critical 10.0
Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection
IBM Langflow OSS 1.0.0 through 1.9.3 has an vulnerability due to an improper isolation of Python execution combined with an authentication bypass that allows an unauthenticated attacker to execute arbitrary code on the host system, resulting in complete compr…
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Critical 9.8
Path Traversal Vulnerability in File Processing Components Allows Unauthorized File System Access and Potential Remote Code Execution
IBM Langflow OSS 1.0.0 through 1.9.1 could allow remote code execution due to improper validation of symbolic links during archive extraction.