Description

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 returned the unresolved path for subsequent file operations. A local attacker able to write to the memory directory could retarget a symlink between validation and use, causing reads or writes to escape the sandbox. The synchronous memory tool implementation was not affected. This issue has been patched in version 0.87.0.

INFO

Published Date :

2026-03-31T21:32:37.537Z

Last Modified :

2026-03-31T21:32:37.537Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34452 vulnerability.

Vendors Products
Anthropics
  • Anthropic-sdk-python

CVSS Vulnerability Scoring System

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