CVE-2026-52869 MCP Python SDK: HTTP transports serve session requests without verifying the authenticated principal

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.streamablehttpmanager.StreamableHTTPSessionManager route requests to existing...

CVE-2026-52869

The MCP Python SDK (mcp on PyPI) has a vulnerability affecting versions prior to 1.27.2 in its SSE and stateful Streamable HTTP transports. These transports (mcp.server.sse.SseServerTransport and mcp.server.streamable_http_manager.StreamableHTTPSessionManager) route requests to an existing sessio...

CVE-2026-59950: Origin Validation Error

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.websocketserver transport accepted WebSocket handshakes without applying Host or Origin header validation, leaving no SDK-level way to restric...

CVE-2026-15746: Server-Side Request Forgery (SSRF)

Strands Agents is an open-source Python SDK for building and running AI agents. The strands-agents-tools package provides pre-built tools for use with the SDK, including the elasticsearchmemory tool for agent memory storage. We identified CVE-2026-15746, a server-side request forgery SSRF issue i...

CVE-2026-52870: Missing Authorization

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.enabletasks for tasks/list, tasks/get, tasks/result, and tasks/cancel operate only on task identifiers without recordin...

CVE-2026-52869: Authorization Bypass Through User-Controlled Key

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.streamablehttpmanager.StreamableHTTPSessionManager route requests to existing...

PYSEC-2026-3060 Amazon SageMaker Python SDK is missing integrity verification in its Triton inference handler

Summary Amazon SageMaker Python SDK is an open-source library for training and deploying machine learning models on Amazon SageMaker. An issue exists where, under certain circumstances, the Triton inference handler deserializes model artifacts without performing integrity verification, allowing...

CVE-2026-54293 vulnerabilities

Vulnerabilities for packages: open-webui, apache-beam-python-3.11-sdk, py3-nltk, apache-beam-python-3.13-sdk, nemo, label-studio, apache-beam-python-3.12-sdk...

CVE-2026-15062: Improper Neutralization of Special Elements used in an SQL Command

SQL injection vulnerabilities in the Snowflake Snowpark Python SDK snowpark-python versions prior to 1.53.0 could allow authenticated low-privilege users to execute SQL beyond their authorization scope. An attacker could exploit these vulnerabilities by embedding SQL payloads in source database...

SageMaker Python SDK has Insecure TLS Configuration

SummarySageMaker Python SDK is an open source library for training and deploying machine learning models on Amazon SageMaker. An issue where SSL certificate verification was globally disabled in the Triton Python backend has been found. ImpactArbitrary Code Execution: Disabling SSL verification...

PYSEC-2026-1886 SageMaker Python SDK has Insecure TLS Configuration

Summary SageMaker Python SDK is an open source library for training and deploying machine learning models on Amazon SageMaker. An issue where SSL certificate verification was globally disabled in the Triton Python backend has been found. Impact Arbitrary Code Execution: Disabling SSL verification...

Model Context Protocol (MCP) Python SDK does not enable DNS rebinding protection by default

DescriptionThe Model Context Protocol MCP Python SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication using FastMCP with streamable HTTP or SSE transport, and has not configured...

SageMaker Workflow component allows possibility of MD5 hash collisions

A vulnerability in the SageMaker Workflow component of aws/sagemaker-python-sdk allows for the possibility of MD5 hash collisions in all versions. This can lead to workflows being inadvertently replaced due to the reuse of results from different configurations that produce the same MD5 hash. This...

weixin-python XML External Entity vulnerability

A vulnerability was found in zwczou WeChat SDK Python 0.3.0 and classified as critical. This issue affects the function validate/toxml. The manipulation leads to xml external entity reference. The attack may be initiated remotely. Upgrading to version 0.5.5 is able to address this issue. The name...

PT-2026-53646

Summary Alice exposes a Python SDK ProxyShare with a fixed target URL. Bob sends a request to the share with an absolute URL in the path. The Flask handler passes that path to urllib.parse.urljoin, which replaces Alice's configured target host with Bob's host and returns the server-side response ...

EUVD-2026-37289

LangGraph SDK has unsafe URL path construction...

CVE-2026-12530 Improper neutralization of argument delimiters in AWS Bedrock AgentCore Python SDK install_packages()

Improper neutralization of argument delimiters in the installpackages method in AWS Bedrock AgentCore Python SDK versions = 1.1.3 and 1.6.1 might allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments. To mitigate thi...

PYSEC-2026-2194

LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. Versions 0.3.14 and prior have unsafe URL path construction through unsanitized caller-supplied identifier values used in HTTP request paths for resource...

CVE-2026-48776: Improper Limitation of a Pathname to a Restricted Directory

LangGraph Python SDK is used to connect to running LangGraph API servers, manage assistants, threads and stream runs from Python applications. Versions 0.3.14 and prior have unsafe URL path construction through unsanitized caller-supplied identifier values used in HTTP request paths for resource...

CVE-2026-12530: Improper Neutralization of Argument Delimiters in a Command

Improper neutralization of argument delimiters in the installpackages method in AWS Bedrock AgentCore Python SDK versions = 1.1.3 and 1.6.1 might allow a remote authenticated user to execute arbitrary commands within the Code Interpreter sandbox via crafted package name arguments. To mitigate thi...