CVE-2026-55107

Katalog CVE

CVSS 10.0 · Critical EPSS 0,80%

Kerentanan Improper Control of Generation of Code ('Code Injection'). Skor CVSS 3.1 10.0 (Critical) menurut github.com.

Deskripsi (NVD)

Kobako is a Ruby gem that embeds a Wasm-isolated mruby interpreter inside applications, allowing execution of untrusted Ruby scripts (LLM-generated code, user formulas, student submissions, third-party plugins) in-process without giving them access to host memory, files, network, or credentials. From version 0.1.0 to before version 0.9.1, a guest mruby script running inside the Kobako sandbox can execute arbitrary Ruby in the host process, fully escaping the sandbox. This issue has been patched in version 0.9.1.

Rincian

Terbit di NVD

30 September 2026

Terakhir diubah

30 September 2026

Status NVD

Deferred

CVSS 3.1

10.0 (Critical), sumber github.com
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-94: Improper Control of Generation of Code ('Code Injection')
CWE-470: Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

EPSS (30 hari)

0,80% peluang dieksploitasi; lebih tinggi dari 55,4% 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

• https://github.com/elct9620/kobako/commit/64f84700c81f44902bed9211318d5362f44987b3
• https://github.com/elct9620/kobako/releases/tag/v0.9.1
• https://github.com/elct9620/kobako/security/advisories/GHSA-7pwq-q9jf-539h