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2 vulnerabilities found for anthropic-sdk-python by anthropics

CVE-2026-34450 (GCVE-0-2026-34450)
Vulnerability from cvelistv5
Published
2026-03-31 21:32
Modified
2026-04-01 13:35
Severity ?
4.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-276 - Incorrect Default Permissions
  • CWE-732 - Incorrect Permission Assignment for Critical Resource
Summary
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
Impacted products
Vendor Product Version
anthropics anthropic-sdk-python Version: >= 0.86.0, < 0.87.0
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CVE-2026-34452 (GCVE-0-2026-34452)
Vulnerability from cvelistv5
Published
2026-03-31 21:32
Modified
2026-04-03 16:08
Severity ?
5.8 (Medium) - CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
  • CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
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.
References
Impacted products
Vendor Product Version
anthropics anthropic-sdk-python Version: >= 0.86.0, < 0.87.0
 Create a notification for this product.
Show details on NVD website

To clipboard 

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