CVE-2026-55448 json
mise: Local credential_command executes untrusted config
published 2026-06-23 4 mo ago modified 2026-11-03 5 d ago also GHSA-29hf-rm4x-xxph , EUVD-2026-39813
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- crates.io mise 2026.6.4
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| GitHub | 3.1 | 6.3 | CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | mise | >=2026.3.15, <2026.6.4 |
2026.6.4 |
Affected products
- jdx mise
Classification
- Weakness
-
- CWE-78 Improper Neutralization of Special Elements used in an OS Command
References
-
github.com
/jdx/mise/security/advisories/GHSA-29hf-rm4x-xxph
exploit, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-55448
advisory
-
github.com
/jdx/mise
package
Sources
- CVE List CVE-2026-55448
- GitHub Advisory GHSA-29hf-rm4x-xxph
- NVD CVE-2026-55448
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