mise: Arbitrary Code Execution via Tera Templates in .tool-versions Files (Trust Bypass)
mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.3.10, mise processes .tool-versions files through the Tera template engine during parsing, with the exec() function registered, enabling arbitrary command execution. Unlike .mise.toml files, .tool-versions files are not subject to trust verification in non-paranoid mode. This means an attacker can place a malicious .tool-versions file in a git repository, and when a victim with mise activated cds into the directory, arbitrary commands execute without any trust prompt. This vulnerability is fixed in 2026.3.10.
Problem Types
| Type | CWE ID | Description |
|---|
| CWE | CWE-94 | CWE-94: Improper Control of Generation of Code ('Code Injection') |
Type: CWE
Description: CWE-94: Improper Control of Generation of Code ('Code Injection')
Metrics
| Version | Base score | Base severity | Vector |
|---|
| 3.1 | 9.6 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
Version: 3.1
Base score: 9.6
Base severity: CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H