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.
References
Configurations
History
13 Apr 2026, 15:10
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Anthropic
Anthropic claude Sdk For Python |
|
| CPE | cpe:2.3:a:anthropic:claude_sdk_for_python:*:*:*:*:*:python:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 4.4 |
| References | () https://github.com/anthropics/anthropic-sdk-python/commit/715030ceb4d6dd8d3546e999c680e29532bf1255 - Patch | |
| References | () https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.87.0 - Release Notes | |
| References | () https://github.com/anthropics/anthropic-sdk-python/security/advisories/GHSA-q5f5-3gjm-7mfm - Vendor Advisory |
31 Mar 2026, 22:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-03-31 22:16
Updated : 2026-04-13 15:10
NVD link : CVE-2026-34450
Mitre link : CVE-2026-34450
CVE.ORG link : CVE-2026-34450
JSON object : View
Products Affected
anthropic
- claude_sdk_for_python