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CVE-2026-114278— Unauthenticated Command Injection via kubeconfig Username in che-machine-exec

Quick assessment

Affected
Eclipse Foundation Eclipse Che
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.

che-machine-exec 服务在构建 shell 命令时，将用户可控的输入（来自 /exec/init 和 /exec/config JSON 端点的 username 和 namespace 字段）直接拼接到一个带双引号的 调用中，且未进行任何转义处理。当 che-machine-exec 以默认配置（即禁用身份验证）运行时，任何可网络访问的攻击者均可通过 shell 命令替换（使用 或反引号）在 che-machine-exec 配置为可访问的容器中实现远程代码执行。

CVSS 9.8 · Critical
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I. Basic Information for CVE-2026-114278

Vulnerability Information
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Vulnerability Title
Unauthenticated Command Injection via kubeconfig Username in che-machine-exec
Source: CVE Program / CVE List V5
Vulnerability Description
The che-machine-exec service constructs a shell command by concatenating user-controlled input (the username and namespace fields from the /exec/init and /exec/config JSON endpoints) into a double-quoted sh -c "echo "..." > ..." invocation without any escaping. When che-machine-exec is run with authentication disabled (its default), any network-reachable attacker can achieve remote code execution in containers che-machine-exec is configured to access, via shell command substitution ($(...) or backticks).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eclipse Foundation Eclipse Che 7.0.0 ~ 7.122.0 -

II. Public POCs for CVE-2026-114278

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III. Intelligence Information for CVE-2026-114278

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Other References for CVE-2026-114278 (3)

IV. Related Vulnerabilities

Same product: Eclipse Che
Same vendor: Eclipse Foundation
Same weakness: CWE-78