Reflected XSS Vulnerability in GroupOffice by Intermesh
CVE-2026-30238

5.1MEDIUM

Key Information:

Vendor

Intermesh

Status
Groupoffice
Vendor
CVE Published:
6 March 2026

What is CVE-2026-30238?

GroupOffice, an enterprise CRM and groupware tool from Intermesh, is susceptible to a reflected XSS flaw. This vulnerability involves the misuse of the f parameter, which is processed as Base64-encoded JSON and subsequently injected into inline JavaScript without stringent escaping measures. This oversight permits attackers to execute malicious scripts in the context of the victim's browser, potentially compromising sensitive information. The vulnerability has been addressed in updates for GroupOffice versions 6.8.155, 25.0.88, and 26.0.10.

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Affected Version(s)

groupoffice < 6.8.155 < 6.8.155

groupoffice < 25.0.88 < 25.0.88

groupoffice < 26.0.10 < 26.0.10

References

https://github.com/Intermesh/groupoffice/security/advisor...
x_refsource_CONFIRM

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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