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CVE-2026-55448— mise: Local credential_command executes untrusted config

Quick assessment

Affected
jdx mise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

jdx mise是jdx个人开发者开源的一个多语言版本管理器。 jdx mise 2026.3.15版本至2026.6.4之前版本存在命令注入漏洞，该漏洞源于在信任决策前从本地项目配置加载github.credential_command，并在解析GitHub令牌时通过sh -c执行该值，可能导致攻击者放置.mise.toml文件后，在受害者运行GitHub相关mise命令且未设置更高优先级的GitHub令牌环境变量时执行任意shell命令。

CVSS 6.3 · Medium EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
jdx mise < 2026.6.4 affected
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I. Basic Information for CVE-2026-55448

Vulnerability Information
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Vulnerability Title
mise: Local credential_command executes untrusted config
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
jdx mise 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jdx mise是jdx个人开发者开源的一个多语言版本管理器。 jdx mise 2026.3.15版本至2026.6.4之前版本存在命令注入漏洞，该漏洞源于在信任决策前从本地项目配置加载github.credential_command，并在解析GitHub令牌时通过sh -c执行该值，可能导致攻击者放置.mise.toml文件后，在受害者运行GitHub相关mise命令且未设置更高优先级的GitHub令牌环境变量时执行任意shell命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jdx mise < 2026.6.4 -

II. Public POCs for CVE-2026-55448

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III. Intelligence Information for CVE-2026-55448

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Vendor Advisories for CVE-2026-55448 (1)

Same Patch Batch · jdx · 2026-06-26 · 4 CVEs total

CVE-2026-33646 9.6 CRITICAL mise: Arbitrary Code Execution via Tera Templates in .tool-versions Files (Trust Bypass)
CVE-2026-55441 8.6 HIGH mise: Arbitrary command execution via task-include files in an untrusted, config-less repo
CVE-2026-54557 5.5 MEDIUM mise HTTP backend uses raw version path for install symlink destination

IV. Related Vulnerabilities

Same product: mise
Same vendor: jdx
Same weakness: CWE-78

V. Comments for CVE-2026-55448

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