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2 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.
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. Users on the affected versions are advised to update to the latest version. Claude SDK for Python thanks hackerone.com/kasthelord for reporting this issue!
Recommended action: Upgrade to 0.87.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
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. Users on the affected versions are advised to update to the latest version. Claude SDK for Python thanks lucasfutures on HackerOne for the report.
Recommended action: Upgrade to 0.87.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.