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 0.81.0, the local filesystem memory tool in the Anthropic TypeScript SDK validated model-supplied paths using a string prefix check that did not append a trailing path separator. A model steered by prompt injection could supply a crafted path that resolved to a sibling directory sharing the memory root's name as a prefix, allowing reads and writes outside the sandboxed memory directory. This issue has been patched in version 0.81.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| anthropics | anthropic-sdk-typescript | >= 0.79.0, < 0.81.0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | @anthropic-ai/sdk | >= 0.79.0, < 0.81.0 | 0.81.0 | GHSA-5474-4w2j-mq4c |