Description

Claude SDK for TypeScript provides access to the Claude API from server-side TypeScript or JavaScript applications. From version 0.79.0 to before version 0.91.1, the BetaLocalFilesystemMemoryTool in the Anthropic TypeScript SDK created memory files and directories using the Node.js default modes (0o666 for files, 0o777 for directories), 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. This issue has been patched in version 0.91.1.

INFO

Published Date :

2026-05-04T18:41:40.183Z

Last Modified :

2026-05-04T18:41:40.183Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-41686 vulnerability.

Vendors Products
Anthropics
  • Anthropic-sdk-typescript
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-41686.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability