Claude SDK for TypeScript: Memory Tool Path Validation Allows Sandbox Escape to Sibling Directories

TRUNG BÌNH 5.4CVE-2026-34451 · GHSA-5474-4w2j-mq4c · Công bố 31/03/2026 · cập nhật 24/07/2026

Tóm tắt nhanh

CVE-2026-34451 là lỗ hổng mức TRUNG BÌNH (CVSS 5.4) ảnh hưởng claude sdk for typescript (anthropic), @anthropic-ai/sdk.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.36%, cao hơn 30.1% các lỗ hổng khác.
Cách xử lý: cập nhật lên 0.81.0 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
claude sdk for typescript anthropic	`≥ 0.79.0, < 0.81.0`	`0.81.0`
@anthropic-ai/sdk npm	`≥ 0.79.0, < 0.81.0`	`0.81.0`

Mô tả

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.

Users on the affected versions are advised to update to the latest version.

Claude SDK for TypeScript thanks hackerone.com/nicksim for reporting this issue!

Mô tả của NVD

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.