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...

CVE-2026-17633

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary code due to code injection...

CVE-2026-9196

IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute unintended code during Agentic Assistant validation due to improper handling of LLM‑generated components. The application executes model‑generated Python code in the backend during validation prior to user...

CVE-2026-9201

IBM Langflow OSS 1.0.0–1.10.3 is affected by an authenticated arbitrary code execution vulnerability in the custom component validation mechanism. The hardening mode that restricts execution to trusted templates validates component code using a truncated SHA-256 digest, causing only a portion of ...

CVE-2026-8478 Langflow OSS is affected by arbitrary code execution in component generation, validation, and custom component handling

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to inject arbitrary code on the system, due to the improper control of user input code...

CVE-2026-8183

Langflow OSS is affected (versions 1.0.0–1.10.3) by a vulnerability described as remote directory traversal via crafted URLs containing dot-dot sequences ( /.. / ), enabling access to arbitrary files on the system. The Connected CVE entry corroborates the affected versions and the traversal vecto...

CVE-2026-8183

IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot "...

EUVD-2026-53554

IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot "...

CVE-2026-9130

CVE-2026-9130 affects IBM Langflow OSS versions 1.0.0–1.10.3. The root cause is an authorization bypass in the MemoryComponent where session_id is used to filter messages without validating flow_id or user_id ownership, enabling cross‑user information disclosure. This impacts multi‑user deploymen...

CVE-2026-9130 Langflow OSS is affected by arbitrary code execution in custom component validation and trusted code enforcement

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authorization bypass vulnerability in the MemoryComponent that allows authenticated users to access chat history of other users via sessionid collision. The MemoryComponent.retrievemessages and storemessage methods filter on sessionid without...

EUVD-2026-53549

IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 use Python's non-cryptographic random module for generating Fernet encryption keys from user secrets under 32 characters. The deterministic Mersenne Twister PRNG produces identical keys for...

CVE-2026-9205

IBM Langflow OSS contains a weak cryptographic key derivation vulnerability in the ensurefernetkey function...

CVE-2026-7657 Langflow OSS is affected by server-side request forgery in provider validation and API request functionality

IBM Langflow OSS 1.0.0 through 1.10.3 Langflow could allow server-side request forgery SSRF due to incomplete and ineffective SSRF protection enforcement...

CVE-2026-7657

IBM Langflow OSS versions 1.0.0–1.10.3 are affected by server-side request forgery (SSRF) due to incomplete and ineffective SSRF protection enforcement. The CVSS vector indicates network access with low attack complexity, requiring low privileges and no user interaction, with a high confidentiali...

EUVD-2026-53520

IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special element...

EUVD-2026-53477

IBM Langflow OSS 1.0.0 through 1.10.3 could allow a remote attacker to execute arbitrary code due to improper validation of configuration parameters...

EUVD-2026-53465

IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol MCP composer endpoint when mcpcomposerenabled=true default and projects are configured with authtype=oauth...

CVE-2026-12946 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...

CVE-2026-13435 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...

CVE-2026-13446 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...