NPM: Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication

NPM: Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication vulnerability discovered by ? in WordPress Npm line-desktop-mcp versions = 1.1.1...

Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication

Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication Summary line-desktop-mcp supports a --http-mode Streamable HTTP transport for use with clients such as n8n. In this mode the server binds to 0.0.0.0 and exposes the MCP /mcp endpoint without an MCP-layer...

Security Bulletin: Unauthenticated Cross-User MCP Resource Access and Tool Execution via Streamable Transport Authorization Bypass

Summary An improper authorization vulnerability in Streamable MCP transport endpoint /api/v1/mcp/project/projectid/streamable allows unauthenticated attackers to bypass project ownership controls and execute Model Context Protocol MCP operations against OAuth-authenticated projects owned by other...

CVE-2026-7664

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint...

CVE-2026-7664

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint...

CVE-2026-7664 Unauthenticated Flow Execution via Webhook Endpoint in Langflow OSS

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint...

CVE-2026-7664

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint...

EUVD-2026-38281

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint...

CVE-2026-7664: Improper Authentication

IBM Langflow OSS 1.0.0 through 1.8.4 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint...

PT-2026-51341

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.8.4 Description Improper authorization enforcement in the Streamable MCP transport endpoint allows unauthenticated attackers to access protected MCP project resources and execute MCP operations...

CVE-2026-49357 Streamable HTTP mode exposes LINE Desktop read/send tools without MCP authentication

Line Desktop MCP is a project that, while unaffiliated with the official line-bot-mcp-server, allows users to directly operate the LINE Desktop application on Windows or Mac via MCP. line-desktop-mcp supports a --http-mode Streamable HTTP transport for use with clients such as n8n. In this mode t...

NPM: OpenClaw: MCP Streamable HTTP redirects could forward configured custom headers to another origin

NPM: OpenClaw: MCP Streamable HTTP redirects could forward configured custom headers to another origin vulnerability discovered by ? in WordPress Npm openclaw versions 2026.5.12...

GHSA-RJXQ-QQHF-8HWH OpenClaw: MCP Streamable HTTP redirects could forward configured custom headers to another origin

Summary OpenClaw supports remote MCP Streamable HTTP servers with operator-configured custom headers. In affected releases, those headers could be forwarded when the MCP endpoint responded with a cross-origin redirect. This issue is limited to configured MCP Streamable HTTP servers that use custo...

OpenClaw: MCP Streamable HTTP redirects could forward configured custom headers to another origin

Summary OpenClaw supports remote MCP Streamable HTTP servers with operator-configured custom headers. In affected releases, those headers could be forwarded when the MCP endpoint responded with a cross-origin redirect. This issue is limited to configured MCP Streamable HTTP servers that use custo...

Information Exposure

Overview openclaw is a 🦞 OpenClaw — Personal AI Assistant Affected versions of this package are vulnerable to Information Exposure via the MCP Streamable HTTP process when custom headers are configured and the MCP endpoint responds with a cross-origin redirect. An attacker can obtain sensitive...

GHSA-X7CF-6GP3-Q5F8 Duplicate Advisory: MCP Streamable HTTP redirects could forward configured custom headers to another origin

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-rjxq-qqhf-8hwh. This link is maintained to preserve external references. Original Description OpenClaw before 2026.5.12 contains an information disclosure vulnerability in streamable-http MCP servers that forwar...

CVE-2026-53840

OpenClaw CVE-2026-53840 affects the OpenClaw MCP stack before version 2026.5.12. The issue is an information-disclosure vulnerability in streamable-http MCP servers that forwards operator-configured custom headers during cross-origin redirects. If an attacker controls or can compromise an MCP end...

CVE-2026-53840 OpenClaw < 2026.5.12 - Custom Header Leakage via MCP Streamable HTTP Cross-Origin Redirects

OpenClaw before 2026.5.12 contains an information disclosure vulnerability in streamable-http MCP servers that forwards operator-configured custom headers during cross-origin redirects. Attackers controlling or compromising an MCP endpoint can redirect requests to exfiltrate sensitive headers lik...

CVE-2026-53840: Insufficiently Protected Credentials

OpenClaw before 2026.5.12 contains an information disclosure vulnerability in streamable-http MCP servers that forwards operator-configured custom headers during cross-origin redirects. Attackers controlling or compromising an MCP endpoint can redirect requests to exfiltrate sensitive headers lik...

PT-2026-49757

Name of the Vulnerable Software and Affected Versions OpenClaw versions prior to 2026.5.12 Description An information disclosure issue exists in streamable-http MCP servers that forwards operator-configured custom headers during cross-origin redirects. Attackers controlling or compromising an MCP...