PYSEC-2026-1522 Langflow vulnerable to Server-Side Request Forgery

Vulnerability Overview Langflow provides an API Request component that can issue arbitrary HTTP requests within a flow. This component takes a user-supplied URL, performs only normalization and basic format checks, and then sends the request using a server-side httpx client. It does not block...

PYSEC-2026-1526 Langflow Vulnerable to Privilege Escalation via CLI Superuser Creation (Post-RCE)

This vulnerability was discovered by researchers at Check Point. We are sharing this report as part of a responsible disclosure process and are happy to assist in validation and remediation if needed. Summary A privilege escalation vulnerability exists in Langflow containers where an authenticate...

Langflow vulnerable to remote code execution

langflow =1.0.18 is vulnerable to Remote Code Execution RCE as any component provided the code functionality and the components run on the local machine rather than in a sandbox...

PYSEC-2026-1523 Langflow vulnerable to remote code execution

langflow =1.0.18 is vulnerable to Remote Code Execution RCE as any component provided the code functionality and the components run on the local machine rather than in a sandbox...

PYSEC-2026-1521 Inefficient Regular Expression Complexity in langflow

A vulnerability classified as problematic was found in Langflow up to 1.0.18. Affected by this vulnerability is an unknown functionality of the file \src\backend\base\langflow\interface\utils.py of the component HTTP POST Request Handler. The manipulation of the argument remainingtext leads to...

Inefficient Regular Expression Complexity in langflow

A vulnerability classified as problematic was found in Langflow up to 1.0.18. Affected by this vulnerability is an unknown functionality of the file \src\backend\base\langflow\interface\utils.py of the component HTTP POST Request Handler. The manipulation of the argument remainingtext leads to...

Security Bulletin: Path Traversal Vulnerability in File Component Leading to Arbitrary File Read and Authentication Bypass

Summary A path traversal vulnerability existed in the File component's tar archive extraction functionality. An authenticated user could upload a specially crafted tar archive containing symbolic links to read arbitrary files accessible to the application process. The vulnerability allowed an...

Security Bulletin: Parameter Injection Vulnerability in API Graph Execution Engine

Summary A parameter injection vulnerability existed in the API Graph Execution Engine's tweaks processing mechanism. The vulnerability allowed authenticated attackers to bypass security controls and inject malicious parameters into flow components at runtime. An attacker with valid API credential...

Security Bulletin: MCP Server Configuration Validator Bypass via File Upload API

Summary A validation bypass vulnerability existed in the File Manager API that could allow an authenticated attacker to upload malicious MCP server configurations. The file upload endpoint accepted mcpservers.json files without invoking the MCPServerConfig validator, while the structured MCP API...

Security Bulletin: Path Traversal Vulnerability in API Request Component Content-Disposition Header Processing

Summary A path traversal vulnerability existed in the API Request component's response handling logic. An authenticated attacker could craft a malicious server response with a specially crafted Content-Disposition header containing directory traversal sequences. When a victim configured an API...

Security Bulletin: SSRF Protection Configuration Vulnerability

Summary A configuration vulnerability was identified where SSRF Server-Side Request Forgery protection could be disabled through default settings, potentially allowing authenticated users to make the server fetch arbitrary URLs including cloud metadata endpoints 169.254.169.254, internal services...

Security Bulletin: Unauthenticated User Registration Could Lead to Remote Code Execution

Summary An attacker could create accounts on an exposed instance without authentication through the user registration API. If an operator had configured newly created accounts to be active immediately, the attacker could then log in as that new user and reach code-execution functionality, which...

Security Bulletin: Remote Code Execution in CUGA Component CodeAgent

Summary An authenticated user could execute arbitrary commands on the server when the CUGA component is installed and a flow using CUGA's CodeAgent is created and executed. The vulnerability exists in the CodeAgent's Python code execution path, which permits object graph introspection to recover...

Security Bulletin: Arbitrary Code Execution in Python Interpreter Component

Summary A vulnerability in the Python Interpreter component allowed authenticated users to execute arbitrary Python code and escalate privileges to superuser level. An attacker with valid credentials could bypass security controls through the PythonREPLComponent, directly access the database, and...

Security Bulletin: Path Traversal in APIRequest Component via Content-Disposition Header

Summary A path traversal vulnerability existed in the APIRequest component when the "Save to File" feature was enabled. The component extracted filenames from server-controlled Content-Disposition headers without proper sanitization, allowing an attacker-controlled HTTP response to write files to...

Security Bulletin: Remote Code Execution via Code Validation Endpoint

Summary A remote code execution vulnerability existed in the code validation endpoint where authenticated users could execute arbitrary code with server privileges. The vulnerability occurred because the validation process compiled and executed user-submitted code, including function...

Security Bulletin: Disk Cache Deserialization Remote Code Execution Vulnerability

Summary A remote code execution vulnerability was discovered in the disk-based caching mechanism. The vulnerability arose from unsafe deserialization of pickle data in cache services, which processed cached items without validation or integrity checks. An attacker who could influence or tamper wi...

Security Bulletin: Authentication Bypass in Webhook Endpoints Allowed Unauthorized Flow Execution

Summary A vulnerability in the webhook authentication logic allowed unauthenticated users to trigger execution of any flow. The system incorrectly bypassed API key validation when the WEBHOOKAUTHENABLE configuration was set to False the default setting, allowing remote attackers who knew a flow's...

Sysdig Details JADEPUFFER, the First Documented Agentic Ransomware Operation

A new Sysdig report traces how an LLM agent abused a Langflow flaw, stole credentials, reached production MySQL, and destroyed Nacos config data in minutes flat...

AI Agent Exploits Langflow RCE to Automate Database Ransomware Attack

Security firm Sysdig says it has found what it believes is the first ransomware attack run from start to finish by an AI agent. Its Threat Research Team calls the operator JADEPUFFER and says a large language model handled the whole job: breaking in, stealing credentials, moving deeper into the...