What’s Vulnerable › Vulnerabilities

CVE-2026-33646: mise: Arbitrary Code Execution via Tera Templates in .tool-versions Files (Trust Bypass)

• Severity: critical (CVSS 9.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-26 · updated 2026-10-25
• Weakness: CWE-94

Description

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.

Affected products

• jdx mise: before 2026.3.10

References

• https://github.com/jdx/mise/security/advisories/GHSA-fjj5-v948-whjj
• https://github.com/jdx/mise/security/advisories/GHSA-fjj5-v948-whjj

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