mise: Incorrect file ownership, when installed by the root user using `install.sh`

published 2026-08-18 2 mo ago modified 2026-10-22 17 d ago also EUVD-2026-60974

cvss: 6.7; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 2%
public exploits: 0; none known

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.

Patch / fix

links 5

github.com/jdx/mise@b65dd67 commit
github.com/jdx/mise@f1c2890 commit
github.com/jdx/mise#10808 pull request
github.com/jdx/mise#10819 pull request
github.com/jdx/mise/releases/tag/v2026.7.1 release

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 mo ago (2026-08-18)

Exploit prediction

0.13% chance of exploitation in the next 30 days, higher than 2% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/jdx/mise/security/advisories/GHSA-9mm4-fgvc-x7rp referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.7	CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

jdx mise

Classification

Weakness

CWE-278 Insecure Preserved Inherited Permissions

References

Sources

CVE List CVE-2026-71477
NVD CVE-2026-71477

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary