CVE-2026-55581

Katalog CVE KUTIM-CSIRT

TLP:CLEAR

csirt@kutim:~/threat-intel/cve/CVE-2026-55581

Katalog CVE

CVSS 8.4 · High EPSS 0,45%

Kerentanan Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'). Skor CVSS 3.1 8.4 (High) menurut github.com.

Deskripsi (NVD)

mcp-shell is an MCP server for running shell commands securely, auditably, and on demand. Prior to 0.6.0, the default Docker security.yaml includes /bin/bash in allowed_executables, while security.go validates only the first token and checkBlockedPatternsAndCommands does not reject the shell command-mode flag -c. A caller of the shell_exec MCP tool can provide the command argument `/bin/bash -c <arbitrary-command>`, which passes validation and reaches executor.go, where parseCommand and exec.CommandContext execute the arbitrary command as mcpuser outside the intended allowlist. This issue is fixed in version 0.6.0.

Rincian

Terbit di NVD
25 Agustus 2026
Terakhir diubah
9 September 2026
Status NVD
Deferred
CVSS 3.1
8.4 (High), sumber github.com
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator
Jenis kelemahan (CWE)
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-183: Permissive List of Allowed Inputs
CWE-1188: Initialization of a Resource with an Insecure Default
EPSS (30 hari)
0,45% peluang dieksploitasi; lebih tinggi dari 37,6% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

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.