CVE-2026-71477 mise: Incorrect file ownership, when installed by the root user using `install.sh`
Local attackers can replace root-installed executables due to incorrect file ownership, enabling privilege escalation and code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-71477?
CVE-2026-71477 is a medium-severity vulnerability in jdx mise, published on 18 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-278
Which versions are affected by CVE-2026-71477?
How do I fix CVE-2026-71477?
No fix has been published for CVE-2026-71477 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-71477 being exploited?
There is no known exploitation of CVE-2026-71477 in the wild and no public exploit code.
Sources
Also known as GHSA-9mm4-fgvc-x7rp.