CVE-2026-77073: Authorization Bypass Through User-Controlled Key

n8n versions before 2.34.1 contain a credential validation bypass in the MCP createworkflowfromcode tool when authentication type is set to an expression. Attackers with a valid MCP Bearer API key and knowledge of a target credential ID can persist unauthorized cross-project credential references...

CVE-2026-54052

n8n-MCP is an MCP server that provides AI assistants access to n8n node documentation, properties, and operations. Prior to 2.56.1, in HTTP mode with multi-tenancy enabled through ENABLEMULTITENANT=true, n8n-mcp's local workflow version history backups were not isolated per tenant, allowing an...

CVE-2026-59259

CVE-2026-59259 affects n8n released until versions 1.123.61, 2.27.4, and 2.28.1. The vulnerability is a permission bypass in external secrets handling caused by a mismatch between the static validation check and the runtime expression engine. An authenticated user who can create or update credent...

CVE-2026-42226

n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supp...

CVE-2026-43394

A flaw was found in the Linux kernel's nfsd component. The nfsdnllistenersetdoit function fails to properly release credential references, resulting in a resource leak. This issue could allow a local attacker to exhaust system resources, potentially leading to a Denial of Service DoS...

Authorization Bypass Through User-Controlled Key

Overview flowise is a Flowiseai Server Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key through the generateTextToSpeech handler in text-to-speech/index.ts. An attacker can retrieve text-to-speech settings from a chatflow in another workspace by...