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CVE-2026-30880— baserCMS: OS command injection vulnerability in installer

Quick assessment

Affected
baserproject basercms
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.

baserCMS是baserCMS团队的一套企业级内容管理系统（CMS）。 baserCMS 5.2.3之前版本存在操作系统命令注入漏洞，该漏洞源于安装程序核心模块中，攻击者可构造包含恶意系统命令的特制请求，以 web 服务进程的权限执行任意操作系统命令。

AI Predicted 9.8 Difficulty: Easy EPSS 2.03% · P79

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-30880

Vulnerability Information
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Vulnerability Title
baserCMS: OS command injection vulnerability in installer
Source: CVE Program / CVE List V5
Vulnerability Description
baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has an OS command injection vulnerability in the installer. This issue has been patched in version 5.2.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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
baserCMS 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
baserCMS是baserCMS团队的一套企业级内容管理系统（CMS）。 baserCMS 5.2.3之前版本存在操作系统命令注入漏洞，该漏洞源于安装程序核心模块中，攻击者可构造包含恶意系统命令的特制请求，以 web 服务进程的权限执行任意操作系统命令。
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
baserproject basercms < 5.2.3 -

II. Public POCs for CVE-2026-30880

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III. Intelligence Information for CVE-2026-30880

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Vendor Advisories for CVE-2026-30880 (2)

Vendor Pages for CVE-2026-30880 (1)

Same Patch Batch · baserproject · 2026-03-31 · 9 CVEs total

CVE-2026-21861 9.1 CRITICAL baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)
CVE-2026-30877 9.1 CRITICAL baserCMS: OS Command Injection in the baserCMS Update Functionality
CVE-2025-32957 8.7 HIGH baserCMS: unsafe File Upload Leading to Remote Code Execution (RCE)
CVE-2026-30940 7.2 HIGH baserCMS: Path Traversal in Theme File API Leads to Arbitrary File Write and RCE
CVE-2026-32734 7.1 HIGH baserCMS: Multiple vulnerabilities in baserCMS
CVE-2026-30878 5.3 MEDIUM baserCMS: Mail Form Acceptance Bypass via Public API
CVE-2026-27697 baserCMS: SQL injection vulnerability in blog post
CVE-2026-30879 baserCMS: Cross-site scripting vulnerability in blog post

IV. Related Vulnerabilities

Same product: basercms
Same vendor: baserproject
Same weakness: CWE-78

V. Comments for CVE-2026-30880

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