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 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 persisted agent state, and in containerized deployments could modify memory files to influence subsequent model behavior. Both the synchronous and asynchronous memory tool implementations were affected. This issue has been patched in version 0.87.0.

INFO

Published Date :

2026-03-31T21:32:53.617Z

Last Modified :

2026-04-01T13:35:18.879Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34450 vulnerability.

Vendors Products
Anthropics
  • Anthropic-sdk-python

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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SS Confidentiality
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