Security Bulletin: MCP Python SDK DNS Rebinding Vulnerability in HTTP Servers (Fixed in 1.23.0) affects watsonx.data

Summary The MCP Python SDK mcp prior to 1.23.0 did not enable DNS rebinding protection by default for HTTP-based servers. This could allow a malicious website to bypass same-origin policies and send requests to a local MCP server running without authentication. This can affect watsonx.data...

Insecure File Permissions

Claude SDK for Python is vulnerable to insecure file permissions. The vulnerability is due to the memory tool creating files with mode 0o666, where the files are world‑readable on systems with a standard umask and world‑writable in environments with a permissive umask, and a local attacker on a...

CVE-2026-34450

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the local filesystem memory tool in the Anthropic Python SDK created memory files with mode 0o666, leaving them world-readable on systems with a standard umask and...

EUVD-2026-17681

Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape...

Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape

The async local filesystem memory tool in the Anthropic Python SDK validated that model-supplied paths resolved inside the sandboxed memory directory, but then returned the unresolved path for subsequent file operations. A local attacker able to write to the memory directory could retarget a...

EUVD-2026-17677

Claude SDK for Python has Insecure Default File Permissions in Local Filesystem Memory Tool...

PYSEC-2026-2115

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the async local filesystem memory tool in the Anthropic Python SDK validated that model-supplied paths resolved inside the sandboxed memory directory, but then...

PYSEC-2026-2114

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the local filesystem memory tool in the Anthropic Python SDK created memory files with mode 0o666, leaving them world-readable on systems with a standard umask and...

CVE-2026-34450 Claude SDK for Python: Insecure Default File Permissions in Local Filesystem Memory Tool

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the local filesystem memory tool in the Anthropic Python SDK created memory files with mode 0o666, leaving them world-readable on systems with a standard umask and...

CVE-2026-34450

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the local filesystem memory tool in the Anthropic Python SDK created memory files with mode 0o666, leaving them world-readable on systems with a standard umask and...

CVE-2026-34452 Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the async local filesystem memory tool in the Anthropic Python SDK validated that model-supplied paths resolved inside the sandboxed memory directory, but then...

CVE-2026-34452 Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the async local filesystem memory tool in the Anthropic Python SDK validated that model-supplied paths resolved inside the sandboxed memory directory, but then...

PT-2026-29380

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the async local filesystem memory tool in the Anthropic Python SDK validated that model-supplied paths resolved inside the sandboxed memory directory, but then...

PT-2026-29378

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, the local filesystem memory tool in the Anthropic Python SDK created memory files with mode 0o666, leaving them world-readable on systems with a standard umask and...

AWS VDP: Incomplete Input Sanitization in CodeInterpreter install_packages Allows Command Injection via pip Flags

The Bedrock AgentCore Python SDK was found to have an incomplete input sanitization vulnerability in the installpackages method. The sanitization process failed to properly handle certain pip flags, such as --index-url, which allowed arbitrary command execution within the Code Interpreter sandbox...

GitHub: CVE-2026-26030 Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable

CVE-2026-26030 is a Remote Code Execution vulnerability that has been identified in Microsoft Semantic Kernel Python SDK, specifically within the InMemoryVectorStore filter functionality. GitHub created this CVE on their behalf. GitHub created this CVE on their behalf. This document incorporates...

CVE-2026-26030

Semantic Kernel, Microsoft's semantic kernel Python SDK, has a remote code execution vulnerability in versions prior to 1.39.4, specifically within the InMemoryVectorStore filter functionality. The problem has been fixed in version python-1.39.4. Users should upgrade this version or higher. As a...

CVE-2026-2472

CVE-2026-2472 concerns Google Cloud Vertex AI SDK (google-cloud-aiplatform). The vulnerability resides in the _genai/_evals_visualization component and affects versions from 1.98.0 up to, but not including, 1.131.0. It enables a stored XSS where an unauthenticated remote attacker can inject scrip...

Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution

Impact: An RCE vulnerability has been identified in Microsoft Semantic Kernel Python SDK, specifically within the InMemoryVectorStore filter functionality. Patches: The problem has been fixed in python-1.39.4. Users should upgrade this version or higher. Workarounds: Avoid using InMemoryVectorSto...

GHSA-XJW9-4GW8-4RQX Microsoft Semantic Kernel InMemoryVectorStore filter functionality vulnerable to remote code execution

Impact: An RCE vulnerability has been identified in Microsoft Semantic Kernel Python SDK, specifically within the InMemoryVectorStore filter functionality. Patches: The problem has been fixed in python-1.39.4. Users should upgrade this version or higher. Workarounds: Avoid using InMemoryVectorSto...