CVE-2026-41686

Published: Mag 04, 2026 Last Modified: Mag 04, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 4,8
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

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.

732

Incorrect Permission Assignment for Critical Resource

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Access Control Integrity Other
Potential Impacts:
Read Application Data Read Files Or Directories Gain Privileges Or Assume Identity Modify Application Data Other
Applicable Platforms
Technologies: Cloud Computing, Not Technology-Specific
Likelihood of Exploit: High
View CWE Details
https://github.com/anthropics/anthropic-sdk-typescript/secu…
https://github.com/anthropics/anthropic-sdk-typescript/security/advisories/GHSA…