CVE-2026-72768

n8n versions before 2.32.1 contain a server-side request forgery protection bypass vulnerability in the MCP Client node that allows authenticated users to bypass SSRF protections. Attackers can craft workflows that send requests to internal or blocked hosts without routing through SSRF protection...

EUVD-2026-56094

n8n versions before 2.32.1 contain a server-side request forgery protection bypass vulnerability in the MCP Client node that allows authenticated users to bypass SSRF protections. Attackers can craft workflows that send requests to internal or blocked hosts without routing through SSRF protection...

CVE-2026-72768

n8n versions before 2.32.1 contain a server-side request forgery protection bypass vulnerability in the MCP Client node that allows authenticated users to bypass SSRF protections. Attackers can craft workflows that send requests to internal or blocked hosts without routing through SSRF protection...

CVE-2026-72768

CVE-2026-72768 affects n8n versions before 2.32.1. The vulnerability resides in the MCP Client node and is a server-side request forgery protection bypass . It allows an authenticated user to bypass SSRF protections, craft workflows that send requests to internal or blocked hosts without routing ...

CVE-2026-72768 n8n before 2.32.1 SSRF Protection Bypass via MCP Client

n8n versions before 2.32.1 contain a server-side request forgery protection bypass vulnerability in the MCP Client node that allows authenticated users to bypass SSRF protections. Attackers can craft workflows that send requests to internal or blocked hosts without routing through SSRF protection...

Server-side Request Forgery (SSRF)

Overview @n8n/n8n-nodes-langchain is a Affected versions of this package are vulnerable to Server-side Request Forgery SSRF in the MCP Client. An attacker can access internal or otherwise restricted network resources by supplying crafted endpoints, causing the server to connect to unintended host...

GHSA-VHF8-CG2H-CG3P n8n: SSRF Protection Bypass via MCP Client Node

Impact On an n8n instance with SSRF protection enabled, the MCP Client node sent requests to a user-supplied endpoint without routing them through that protection and without pinning the resolved address. An authenticated user who could create or edit a workflow could therefore cause the server t...

CVE-2026-54149 MaxKB MCP tool import validation bypass allows post-authentication remote code execution

MaxKB is an open-source AI assistant for enterprise. Prior to 2.10.0-lts, MaxKB tool import functionality in apps/tools/serializers/tool.py and MCP referencing mode in apps/application/chatpipeline/step/chatstep/impl/basechatstep.py do not consistently validate MCP transport type, allowing an...

CVE-2026-12774 BerriAI litellm MCP Server Connection Testing rest_endpoints.py _execute_with_mcp_client server-side request forgery

A security vulnerability has been detected in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function executewithmcpclient of the file litellm/proxy/experimental/mcpserver/restendpoints.py of the component MCP Server Connection Testing. The manipulation leads to server-side...

PT-2026-40789

Two CVEs CVE-2026-30889 and CVE-2026-31200 were classic JSON-RPC parser bugs in popular MCP client SDKs. One allowed a server response to set arbitrary properties on the client's session-state object via prototype pollution. The other allowed a server to inject batched…...

CVE-2026-42236 n8n: Unauthenticated Denial of Service via MCP Client Registration

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the MCP OAuth client registration endpoint accepted unauthenticated requests and stored client data without adequate resource controls. An unauthenticated remote attacker could exhaust server memor...

CVE-2026-42236 n8n: Unauthenticated Denial of Service via MCP Client Registration

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the MCP OAuth client registration endpoint accepted unauthenticated requests and stored client data without adequate resource controls. An unauthenticated remote attacker could exhaust server memor...

CVE-2026-42236 n8n: Unauthenticated Denial of Service via MCP Client Registration

n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the MCP OAuth client registration endpoint accepted unauthenticated requests and stored client data without adequate resource controls. An unauthenticated remote attacker could exhaust server memor...

com.agentsflex:agents-flex-bom (>=2.1.1 <=2.1.7), com.agentsflex:agents-flex-mcp (>=2.0.0 <=2.1.7) +28 more potentially affected by CVE-2026-34237 via io.modelcontextprotocol.sdk:mcp-core (=1.0.0)

io.modelcontextprotocol.sdk:mcp-core MAVEN version =1.0.0 is affected by a known vulnerability. The following packages have a transitive dependency on io.modelcontextprotocol.sdk:mcp-core and may be impacted: - com.agentsflex:agents-flex-bom =2.1.1, =2.0.0, =2.1.1, =2.0.4, =0.1.1, =0.1.1,...

Amazon Web Services API MCP Server 安全漏洞

The Amazon Web Services API MCP Server is an open-source large-scale context server developed by Amazon Web Services. Versions of the Amazon Web Services API MCP Server from 0.2.14 to 1.3.9 contained security vulnerabilities. These vulnerabilities were due to inadequate protection of alternate...

CVE-2026-30856 WeKnora: Tool Execution Hijacking via Ambigous Naming Convention In MCP client and Indirect Prompt Injection

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a vulnerability involving tool name collision and indirect prompt injection allows a malicious remote MCP server to hijack tool execution. By exploiting an ambiguous naming...

CVE-2026-30856 WeKnora: Tool Execution Hijacking via Ambigous Naming Convention In MCP client and Indirect Prompt Injection

WeKnora is an LLM-powered framework designed for deep document understanding and semantic retrieval. Prior to version 0.3.0, a vulnerability involving tool name collision and indirect prompt injection allows a malicious remote MCP server to hijack tool execution. By exploiting an ambiguous naming...

PT-2026-23799

Name of the Vulnerable Software and Affected Versions WeKnora versions prior to 0.3.0 Description WeKnora, an LLM-powered framework for deep document understanding and semantic retrieval, is susceptible to a vulnerability involving tool name collision and indirect prompt injection. A malicious...

GHSA-MWR6-3GP8-9JMJ orval MCP client is vulnerable to a code injection attack.

Impact The MCP server generation logic relies on string manipulation that incorporates the summary field from the OpenAPI specification without proper validation or escaping. This allows an attacker to "break out" of the string literal and inject arbitrary code. Here is an example OpenAPI with th...

CVE-2026-22785 orval MCP client is vulnerable to a code injection attack.

orval generates type-safe JS clients TypeScript from any valid OpenAPI v3 or Swagger v2 specification. Prior to 7.18.0, the MCP server generation logic relies on string manipulation that incorporates the summary field from the OpenAPI specification without proper validation or escaping. This allo...