What’s Vulnerable › Vulnerabilities
CVE-2026-30238: Group-Office: Reflected XSS in JavaScript context
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-03-06 · updated 2026-06-17
- Weakness: CWE-79
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.
Affected products
- Intermesh Group-Office: before 6.8.155; from 25.0.1 before 25.0.88; from 25.2.1 before 26.0.10 — fixed in 25.0.88, 26.0.10, 6.8.155
How to fix
Upgrade to a fixed version: Intermesh Group-Office 25.0.88, 26.0.10, 6.8.155. Check the vendor advisory for mitigations.
References
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