CVE-2026-55448

Name: CVE-2026-55448
Creator: NVD / NIST
Published: 2026-06-26T18:17:01.323+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10

Last modified Jun 26, 2026

CVE-2026-55448 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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.

Description

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.

Metrics

CVSS 3.1

6.3/10

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Weakness Enumeration

CWE-78

References

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

Timeline

Published: Jun 26, 2026
Last Modified: Jun 26, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2026-55448?

How severe is CVE-2026-55448?

CVE-2026-55448 has a CVSS score of 6.3/10 (MEDIUM severity).

How do I fix CVE-2026-55448?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-55448?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST