CVE-2026-30237— Group-Office: Self XSS in GroupOffice Installer License Page (install/license.php)
Quick assessment
Affected
Intermesh groupoffice
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.
groupoffice是Intermesh开源的一个集团办公室群件和CRM。 groupoffice 6.8.155之前版本、25.0.88之前版本和26.0.10之前版本存在跨站脚本漏洞，该漏洞源于安装程序端点install/license.php中POST字段license未经转义即渲染，可能导致反射型跨站脚本攻击。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-30237
Vulnerability Information
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Vulnerability Title
Group-Office: Self XSS in GroupOffice Installer License Page (install/license.php)
Source: CVE Program / CVE List V5
Vulnerability Description
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.155, 25.0.88, and 26.0.10, there is a reflected XSS vulnerability in the GroupOffice installer, endpoint install/license.php. The POST field license is rendered without escaping inside a <textarea>, allowing a </textarea><script>...</script> breakout.. This issue has been patched in versions 6.8.155, 25.0.88, and 26.0.10.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
groupoffice 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
groupoffice是Intermesh开源的一个集团办公室群件和CRM。 groupoffice 6.8.155之前版本、25.0.88之前版本和26.0.10之前版本存在跨站脚本漏洞，该漏洞源于安装程序端点install/license.php中POST字段license未经转义即渲染，可能导致反射型跨站脚本攻击。
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 |
|---|---|---|---|---|
| Intermesh | groupoffice | < 6.8.155 | - |
|
II. Public POCs for CVE-2026-30237
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-30237 (1)
IV. Related Vulnerabilities
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CVE-2026-45551
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CVE-2026-30238
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CVE-2026-27947
Group-Office Vulnerable to Remote Code Execution (RCE)
Same vendor: Intermesh
-
CVE-2026-45551
Group-Office: Authenticated Stored XSS in Administrator Cont -
CVE-2026-34838
Group-Office: Authenticated Remote Code Execution via PHP In -
CVE-2026-33755
Authenticated SQL Injection in Contact/query addressBookIds -
CVE-2026-30238
Group-Office: Reflected XSS in JavaScript context -
CVE-2026-27947
Group-Office Vulnerable to Remote Code Execution (RCE)
Same weakness: CWE-79
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justhtml before 3.11.0 XSS via selectedcontent projection -
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justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnera
V. Comments for CVE-2026-30237
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