CVE-2026-30238
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
3Tags
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.
Analysis
Reflected cross-site scripting in GroupOffice versions before 6.8.155, 25.0.88, and 26.0.10 allows unauthenticated attackers to execute arbitrary JavaScript in a victim's browser by injecting malicious code through the Base64-encoded f parameter. The vulnerability exists in the external/index flow where user input is decoded and inserted into inline JavaScript without proper sanitization. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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