Path Traversal in Anthropic Claude_sdk_for_typescript
CVE-2026-34451
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 mo…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.003 (27.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Anthropic Claude_sdk_for_typescript
- Anthropics Anthropic-sdk-typescript — versions >= 0.79.0, < 0.81.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-34451?
- CVE-2026-34451 is a medium-severity vulnerability in Anthropic Claude_sdk_for_typescript, classified under Path Traversal. CVSS score: 5.4/10. Published 2026-03-31.
- How severe is CVE-2026-34451?
- Medium severity. CVSS v3 base score is 5.4 out of 10.