Skip to main content
Components
Vulnerabilities
Pricing
MCP
API
Docs
Sign up
Login
Find vulnerabilities. Fix fast with AI.
Search components by package, version, or CVE to get started.
mcp 1.23.2 | Vulnerabilities | Sonatype Guide
Get full component data and automated fixes with Sonatype Guide.
Sign up for free
pypi
mcp
1.23.2
mcp 1.23.2
Published
Dec 8, 2025
•
Policy
compliance
pypi Registry
Developer Trust Score
Recommended Version:
x.y.z
Recommended upgrade that meets your policy.
Compare Versions
Overview
Overview
Versions
72
Versions
72
Vulnerabilities
3
Vulnerabilities
3
Dependencies
13
Dependencies
13
Severity
Critical
(0)
High
(3)
Medium
(0)
Low
(0)
CVSS Score
0.0
10.0
EPSS Score
0.0
1.0
Malware
KEV Status
Published
Filter
Sort: Published (Newest first)
8.1
CVE-2026-59950
The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to 1.28.1, the deprecated mcp.server.websocket.websocket_server transport accepted WebSocket handshakes without applying Host or Origin header validation, leaving no SDK-level way to restrict which origins could connect to applications that exposed that transport. This issue is fixed in version 1.28.1.
affected
Severity
High
Published
Jul 16, 2026
7.1
CVE-2026-52869
The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). Prior to 1.27.2, the SSE and stateful Streamable HTTP transports mcp.server.sse.SseServerTransport and mcp.server.streamable_http_manager.StreamableHTTPSessionManager route requests to existing sessions using only the session_id query parameter or Mcp-Session-Id header without verifying the authenticated principal that created the session, allowing a different bearer-token-authenticated client with a known session ID to inject JSON-RPC messages into that session. This issue is fixed in version 1.27.2.
affected
Severity
High
Published
Jul 16, 2026
7.6
CVE-2026-52870
The MCP Python SDK, called mcp on PyPI, is a Python implementation of the Model Context Protocol (MCP). From 1.23.0 until 1.27.2, default handlers installed by server.experimental.enable_tasks() for tasks/list, tasks/get, tasks/result, and tasks/cancel operate only on task identifiers without recording the session that created each task, allowing any connected client to enumerate, read results from, consume messages for, or cancel other clients' tasks. This issue is fixed in version 1.27.2.
affected
Severity
High
Published
Jul 16, 2026
