CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker,...

CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling

n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker,...

CVE-2026-21858

CVE-2026-21858 (n8n) affects n8n versions starting from 1.65.0 up to and including 1.120.x. The root cause is an inadequate input validation in form-based workflow processing, leading to Content-Type confusion that enables an unauthenticated attacker to read arbitrary server files and potentially...

n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling

Impact A vulnerability in n8n allows an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker. This could result in exposure of sensitive information stored on the system...

Improper Validation of Specified Type of Input

Overview n8n is a n8n Workflow Automation Tool Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input that is passed to the handleFormData function. An attacker can gain unauthorized access to files on the underlying server by requests with unexpected...

Directory Traversal

Overview fast-filesystem-mcp is a Fast Filesystem MCP Server - Advanced file operations with Auto-Chunking, Sequential Reading, complex file operations copy, move, delete, batch, compress, optimized for Claude Desktop Affected versions of this package are vulnerable to Directory Traversal via the...

CVE-2025-67366

@sylphxltd/filesystem-mcp v0.5.8 is an MCP server that provides file content reading functionality. Version 0.5.8 of filesystem-mcp contains a critical path traversal vulnerability in its "readcontent" tool. This vulnerability arises from improper symlink handling in the path validation mechanism...

Critical n8n Vulnerability (CVSS 10.0) Allows Unauthenticated Attackers to Take Full Control

Cybersecurity researchers have disclosed details of yet another maximum-severity security flaw in n8n, a popular workflow automation platform, that allows an unauthenticated remote attacker to gain complete control over susceptible instances. The vulnerability, tracked as CVE-2026-21858 CVSS scor...

CVE-2025-46256 WordPress Advanced Database Cleaner PRO Plugin <= 3.2.10 - Limited .txt Path Traversal vulnerability

Path Traversal: '.../...//' vulnerability in SigmaPlugin Advanced Database Cleaner PRO allows Path Traversal.This issue affects Advanced Database Cleaner PRO: from n/a through 3.2.10...

CVE-2013-7360

Unspecified vulnerability in SAP adminadapter allows remote attackers to read or write to arbitrary files via unknown vectors...

CVE-2013-7364

An unspecified J2EE core service in the J2EE Engine in SAP NetWeaver does not properly restrict access, which allows remote attackers to read and write to arbitrary files via unknown vectors...

CVE-2022-27208

Jenkins Kubernetes Continuous Deploy Plugin 2.3.1 and earlier allows users with Credentials/Create permission to read arbitrary files on the Jenkins controller...

CVE-2022-27968

Cynet 360 Web Portal before v4.5 was discovered to allow attackers to access a list of monitored files and profiles via a crafted GET request sent to /WebApp/SettingsFileMonitor/GetFileMonitorProfiles...

CVE-1999-0124

Vulnerabilities in UMN gopher and gopher+ versions 1.12 and 2.0x allow an intruder to read any files that can be accessed by the gopher daemon...

CVE-1999-0296

Solaris volrmmount program allows attackers to read any file...

CVE-1999-0270

Directory traversal vulnerability in pfdispaly.cgi program sometimes referred to as "pfdisplay" for SGI's Performer API Search Tool performertools allows remote attackers to read arbitrary files...

CVE-1999-0238

php.cgi allows attackers to read any file on the system...

CVE-1999-0468

Internet Explorer 5.0 allows a remote server to read arbitrary files on the client's file system using the Microsoft Scriptlet Component...

CVE-1999-0455

The Expression Evaluator sample application in ColdFusion allows remote attackers to read or delete files on the server via exprcalc.cfm, which does not restrict access to the server properly...

CVE-1999-0347

Internet Explorer 4.01 allows remote attackers to read local files and spoof web pages via a "%01" character in an "about:" Javascript URL, which causes Internet Explorer to use the domain specified after the character...