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CVE-2026-55107

Publié : 30 septembre 2026
Modifié : 30 septembre 2026
Lien officiel NVD
Score CVSS
10
CRITICAL

Description détaillée

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.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Références et Patchs

https://github.com/elct9620/kobako/commit/64f84700c81f44902bed9211318d5362f44987b3https://github.com/elct9620/kobako/releases/tag/v0.9.1https://github.com/elct9620/kobako/security/advisories/GHSA-7pwq-q9jf-539h

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