https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-05T13:43:38.706284+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-278569 EUVD-2026-278569 2026-10-05T13:43:38.708716+00:00 EUVD-2026-278569 https://cve.radiocsirt.org/vuln/fkie_cve-2026-34451 fkie_cve-2026-34451 2026-10-05T13:43:38.708746+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-5474-4w2j-mq4c GHSA-5474-4w2j-mq4c — Claude SDK for TypeScript: Memory Tool Path Validation Allows Sandbox Escape to Sibling Directories 2026-10-05T13:43:38.708779+00:00

Affected: npm: @anthropic-ai/sdk

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](https://hackerone.com/nicksim) for reporting this issue!