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CVE-2026-30238— Group-Office: Reflected XSS in JavaScript context

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external/index流程中f参数解码后未经严格转义即注入内联JavaScript块，可能导致反射型跨站脚本攻击。

AI Predicted 6.1 Difficulty: Easy EPSS 0.33% · P24
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I. Basic Information for CVE-2026-30238

Vulnerability Information
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Vulnerability Title
Group-Office: Reflected XSS in JavaScript context
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 GroupOffice on the external/index flow. The f parameter (Base64 JSON) is decoded and then injected into an inline JavaScript block without strict escaping, allowing </script><script>...</script> injection and arbitrary JavaScript execution in the victim's browser. 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:N/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external/index流程中f参数解码后未经严格转义即注入内联JavaScript块，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-2026-30238

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III. Intelligence Information for CVE-2026-30238

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Vendor Advisories for CVE-2026-30238 (1)

IV. Related Vulnerabilities

Same product: groupoffice
Same vendor: Intermesh
Same weakness: CWE-79

V. Comments for CVE-2026-30238

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