CVE-2025-6514

mcp-remote Connect an MCP Client that only supports local stdio servers to a Remote MCP Server, with auth support: Note: this is a working proof-of-concept but should be considered experimental. Why is this necessary? So far, the majority of MCP servers in the wild are installed locally, using th...

Bifrost < 2.1.0 - Unauthenticated MCP Stdio Command Execution

When dashboard authentication is disabled, Bifrost accepts an unauthenticated stdio MCP client registration and starts its configured command before the MCP handshake completes. This template runs a benign outbound HTTP request from the target and requires an out-of-band callback to confirm comma...

PT-2026-119530

Name of the Vulnerable Software and Affected Versions djust versions 0.9.0 through 1.0.9 djust versions 1.1.0 through 1.1.6 djust versions 1.2.0 through 1.2.3 djust versions 1.3.0rc1 through 1.3.0rc7 Description The find handlers for template MCP tool in python/djust/mcp/server.py accepts an...

Critical Bifrost AI Gateway Flaw Lets Attackers Run Commands Without Credentials

A critical vulnerability in Bifrost, an open-source AI gateway that routes requests to more than 20 LLM providers, allows an unauthenticated attacker to run arbitrary commands on the gateway server with a single HTTP request. The flaw, tracked as CVE-2026-90898 CVSS score: 9.8, affects all versio...

CVE-2026-91988 atomic-agents-stack before 1.1.0 Remote Code Execution via HTTP MCP

atomic-agents-stack before 1.1.0 accepts cleartext HTTP schemes in the HTTP MCP server-registry backend factory, allowing network man-in-the-middle attackers to rewrite catalog responses. Attackers can inject arbitrary command and argument values that are spawned as local subprocesses by...

CVE-2026-90898 Bifrost unauthenticated remote code execution via MCP stdio client registration

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.authconfig.isenabled=false. Auth off means every caller is a local admin...

CVE-2026-90898 Bifrost unauthenticated remote code execution via MCP stdio client registration

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.authconfig.isenabled=false. Auth off means every caller is a local admin...

EUVD-2026-77357

Bifrost registers MCP clients through its management API. A stdio client is a command plus args. Bifrost starts that program in the gateway the moment the client is added. No MCP handshake required. The default is governance.authconfig.isenabled=false. Auth off means every caller is a local admin...

CVE-2026-59809 SiYuan before v3.8.0 Secret Exfiltration via http_request URL

SiYuan before v3.8.0 interpolates secret placeholders into the destination URL parameter of the httprequest MCP tool, allowing attackers to exfiltrate stored secrets. An MCP client can craft a request with an attacker-controlled URL containing secret placeholders to send plaintext secret values t...

EUVD-2026-64267

SiYuan before v3.8.0 interpolates secret placeholders into the destination URL parameter of the httprequest MCP tool, allowing attackers to exfiltrate stored secrets. An MCP client can craft a request with an attacker-controlled URL containing secret placeholders to send plaintext secret values t...

PYSEC-2026-3683 mcp-atlassian: Arbitrary file read via missing path validation in confluence_upload_attachment

Summary confluenceuploadattachment passes filepath directly to openfilepath, "rb" with no path validation. Any authenticated MCP client — or an AI agent manipulated via prompt injection — can read any file the server process can access and exfiltrate it to Confluence as an attachment. Details Roo...

PT-2026-80655

Summary confluence upload attachment passes file path directly to openfile path, "rb" with no path validation. Any authenticated MCP client — or an AI agent manipulated via prompt injection — can read any file the server process can access and exfiltrate it to Confluence as an attachment. Details...

CVE-2026-50143 Actor MCP path authority injection leaks Apify token

The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers, and automation tools available on the Apify Store. Prior to 0.10.11, getActorMCPServerURL in src/mcp/actors.ts concatenates the trusted Actor standby URL with the attacker-controlled...

EUVD-2026-61136

The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers, and automation tools available on the Apify Store. Prior to 0.10.11, getActorMCPServerURL in src/mcp/actors.ts concatenates the trusted Actor standby URL with the attacker-controlled...

CVE-2026-50143 Actor MCP path authority injection leaks Apify token

The Apify MCP server enables AI agents to extract data from websites using ready-made scrapers, crawlers, and automation tools available on the Apify Store. Prior to 0.10.11, getActorMCPServerURL in src/mcp/actors.ts concatenates the trusted Actor standby URL with the attacker-controlled...

atomic-agents-stack: HTTP MCP catalog accepts cleartext http and spawns catalog-supplied commands (MITM to RCE)

The HTTP MCP server-registry backend factory atomicagents/mcpregistry/http.py, makehttpmcpserverregistrybackendfromurl accepts both http and https schemes. Catalog entries carry command/args that are type-validated but content-unrestricted, and are later spawned as local stdio subprocesses by...

CVE-2026-74798: Improper Limitation of a Pathname to a Restricted Directory

SiYuan kernel before v3.7.4 contains a path traversal vulnerability in the databaseclean MCP tool. The tool performs only an empty-string check on the id parameter before passing it to RemoveUnusedAttributeView kernel/model/attributeview.go, which builds a filesystem path via filepath.Join withou...

Token Optimizer MCP: OS command injection in smart_user via username in get-user-info

Summary token-optimizer-mcp is vulnerable to OS command injection in the smartuser tool. The get-user-info operation accepts a user-controlled username argument and later interpolates it into a shell command executed through execAsync: ts getent passwd "$username" || grep "^$username:" /etc/passw...

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...