Langflow < 1.3.0 - Remote Code Execution via validate_code() exec()

Langflow contains a remote code execution caused by inclusion of functionality from untrusted control sphere in the execglobals parameter at the validate endpoint, letting remote attackers execute arbitrary code as root, exploit requires no authentication. id: CVE-2026-0770 info: name: Langflow...

Langflow - Broken Access Control

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple critical API endpoints in Langflow are missing authentication controls. The issue allows any unauthenticated user to access sensitive user conversation data, transaction histories...

CVE-2026-7664

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...

CVE-2026-10561

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 compromise...

CVE-2026-7664 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...

EUVD-2026-38281

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...

CVE-2026-7664

Summary: IBM Langflow OSS versions 1.0.0–1.8.4 are affected by an unauthenticated access issue due to improper authorization enforcement on the Streamable MCP transport endpoint, potentially allowing access to protected MCP project resources and execution of MCP operations. Affected products/vers...

EUVD-2026-38245

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 compromise...

CVE-2026-10561

Affected product: Langflow OSS (1.0.0–1.9.3). Vulnerability: Unauthenticated remote code execution via improper isolation of Python execution in the PythonREPLComponent, combined with an authentication bypass. CPython’s exec() uses a globals dict without correctly restricting builtins, allowing a...

CVE-2026-10561 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 compromise...

Langflow <= 1.8.4 - Path Traversal to RCE via File Upload

The application contains a path traversal vulnerability caused by unsanitized 'filename' parameter in the 'POST /api/v2/files' multipart form data, letting attackers write files to arbitrary filesystem locations, exploit requires crafted request. id: CVE-2026-5027 info: name: Langflow = 1.8.4 -...

Langflow AI <= 1.6.9 - CORS Misconfiguration

Langflow AI versions 1.6.9 and earlier are vulnerable to a CORS misconfiguration that allows any origin to make credentialed requests. Combined with SameSite=None cookies, this enables cross-origin token theft and subsequent remote code execution via the /api/v1/validate/code endpoint. id:...

CVE-2026-12822

A vulnerability was identified in langflow-ai langflow up to 1.9.3. This affects an unknown function of the component Bundle URL Loader. The manipulation leads to code injection. The attack needs to be performed locally. The vendor was contacted early about this disclosure but did not respond in...

CVE-2026-12822 langflow-ai langflow Bundle URL Loader code injection

A vulnerability was identified in langflow-ai langflow up to 1.9.3. This affects an unknown function of the component Bundle URL Loader. The manipulation leads to code injection. The attack needs to be performed locally. The vendor was contacted early about this disclosure but did not respond in...

CVE-2026-12822

Langflow AI (langflow) up to v1.9.3 is affected by CVE-2026-12822 due to a vulnerability in the Bundle URL Loader component leading to local code injection. The attack requires local access; the exact vulnerable function is unspecified. Vendor did not respond to disclosure. CVSS data indicate a M...

Security Bulletin: Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS

Summary Langflow OSS POST /api/v1/webhook/flowid executes any user's flow without authentication by default. Setting WEBHOOKAUTHENABLE defaults to False in auth configuration. When False, webhook handler calls getuserbyflowidorendpointname and trusts caller unconditionally with no credential chec...

Security Bulletin: Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection

Summary Langflow OSS contains unauthenticated RCE vulnerability in PythonREPLComponent "Python Interpreter". Component's getglobals builds restricted globals dict from globalimports whitelist default: "math" but never sets globals"builtins" = . CPython's exec automatically inserts full builtins...

CVE-2026-55447

creationtimestamp| type| source ---|---|--- 2026-06-19 13:25:18+00:00| published-proof-of-concept| https://github.com/langflow-ai/langflow/security/advisories/GHSA-ccv6-r384-xp75 2026-06-20 01:38:03+00:00| seen| https://bsky.app/profile/suriq.io/post/3moopuvtpix24...

PT-2026-50598

Name of the Vulnerable Software and Affected Versions Langflow versions prior to 1.9.1 Description Unauthenticated users with network access can upload unlimited amounts of data to the server, which can lead to disk space exhaustion and a subsequent denial-of-service. Additionally, the server lea...

Langflow: IDOR/BOLA in Monitor API — Missing Ownership Enforcement on 7 Endpoints

Summary Langflow's /api/v1/monitor router exposes 7 endpoints that perform read, write, and delete operations on user-owned resources — messages, sessions, build artifacts, and LLM transaction logs — without verifying that the authenticated requester owns the targeted resource. Any authenticated...