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...

GHSA-Q5F5-3GJM-7MFM Claude SDK for Python has Insecure Default File Permissions in Local Filesystem Memory Tool

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 world-writable in environments with a permissive umask such as many Docker base images. A local attacker on a shared host could read...

CVE-2026-34452

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-2026-34450

The Claude SDK for Python (Anthropic) suffers a local-file-permission issue in its local filesystem memory tool: versions 0.86.0 up to before 0.87.0 create memory files with mode 0o666, making them world-readable on typical umasks and world-writable on permissive Docker images. A local attacker o...

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-2026-34450 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 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-2026-34452 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

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...

Claude SDK for Python 安全漏洞

Claude SDK for Python is an open-source Python software development toolkit developed by Anthropic for calling the Claude API. Versions of Claude SDK for Python prior to 0.87.0 contained a security vulnerability. This vulnerability stemmed from the asynchronous local file system’s memory tools...