CVE-2026-55448

mise manages dev tools like node, python, cmake, and terraform. From 2026.3.15 until 2026.6.4, mise loads github.credential_command from local project config before any trust decision, then executes that value with sh -c when resolving a GitHub token. An attacker who can place a .mise.toml in a repository can execute arbitrary shell commands when the victim runs a GitHub-related mise command and no higher-priority GitHub token environment variable is set. This vulnerability is fixed in 2026.6.4.

• CWE-78

• https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph
• https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph

Published

Jun 26, 2026

Last Modified

Jun 27, 2026

Status

Deferred

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