CVE-2026-34452

Katalog CVE

CVSS 5.3 · Medium EPSS 0,14%

Kerentanan Improper Link Resolution Before File Access ('Link Following') pada anthropic claude sdk for python. Skor CVSS 3.1 5.3 (Medium) menurut NVD.

Deskripsi (NVD)

The Claude SDK for Python provides access to the Claude API from Python applications. From version 0.86.0 to before version 0.87.0, 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. This issue has been patched in version 0.87.0.

Rincian

Terbit di NVD

31 Maret 2026

Terakhir diubah

24 Juli 2026

Status NVD

Analyzed

CVSS 3.1

5.3 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-59: Improper Link Resolution Before File Access ('Link Following')
CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition

EPSS (30 hari)

0,14% peluang dieksploitasi; lebih tinggi dari 2,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/anthropics/anthropic-sdk-python/security/advisories/GHSA-w828-4qhx-vxx3 advisory vendor
• https://github.com/anthropics/anthropic-sdk-python/commit/6599043eee6e86dce16953fcd1fd828052052be6 patch
• https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.87.0 release notes