CVE-2026-67394
Quick assessment
Affected
WebPros Plesk
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.
在 Plesk for Linux 中发现了严重的本地权限提升漏洞，该漏洞通过操作系统命令注入实现。受影响版本为 18.0.34 至 18.0.79.9 之前的所有版本，以及 18.0.80.5。该漏洞允许拥有 shell 访问权限（或被允许修改自身 shell 访问权限）的客户或经销商，在托管服务器上将其权限提升至 root 账户。
Possible ATT&CK Techniques 3 AI
T1548 · Abuse Elevation Control Mechanism T1068 · Exploitation for Privilege Escalation T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-67394
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A critical local privilege escalation via OS command injection vulnerability has been discovered in Plesk for Linux, affecting all versions from 18.0.34 before 18.0.79.9 and 18.0.80.5. The vulnerability allows a customer or reseller with shell access (or allowed to change their own shell access) to elevate privileges to the root account on the hosting server.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA: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
II. Public POCs for CVE-2026-67394
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2026-67394 (1)
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V. Comments for CVE-2026-67394
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