csirt@kutim:~/threat-intel/cve/CVE-2026-39861

Katalog CVE

CVSS 10.0 · Critical EPSS 0,80%

Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada anthropic claude code. Skor CVSS 3.1 10.0 (Critical) menurut NVD.

Deskripsi (NVD)

Claude Code is an agentic coding tool. Prior to version 2.1.64, Claude Code's sandbox did not prevent sandboxed processes from creating symlinks pointing to locations outside the workspace. When Claude Code subsequently wrote to a path within such a symlink, its unsandboxed process followed the symlink and wrote to the target location outside the workspace without prompting the user for confirmation. This allowed a sandbox escape where neither the sandboxed command nor the unsandboxed app could independently write outside the workspace, but their combination could write to arbitrary locations, potentially leading to code execution outside the sandbox. Reliably exploiting this required the ability to add untrusted content into a Claude Code context window to trigger sandboxed code execution via prompt injection. Users on standard Claude Code auto-update have received this fix automatically. Users performing manual updates are advised to update to version 2.1.64 or later.

Rincian

Terbit di NVD
21 April 2026
Terakhir diubah
17 Juni 2026
Status NVD
Analyzed
CVSS 3.1
10.0 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-61: UNIX Symbolic Link (Symlink) Following
EPSS (30 hari)
0,80% peluang dieksploitasi; lebih tinggi dari 55,6% CVE lain

Produk dan versi terdampak

VendorProdukVersi terdampak
anthropic claude code Semua versi sebelum 2.1.64

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.