Vulnerability Description
Group-Office is an enterprise customer relationship management and groupware tool. Prior to 26.0.25, 25.0.100, and 6.8.165, GroupOffice allows authenticated users to persist arbitrary legacy settings for any user_id via index.php?r=core/saveSetting. A separate client-side sink in the email module injects the email_font_size setting directly into JavaScript without escaping. By combining these two issues, any low-privileged authenticated user can overwrite an administrator's email_font_size setting with a JavaScript payload and trigger stored XSS in the administrator's browser when the GroupOffice web client loads views/Extjs3/modulescripts.php. This vulnerability is fixed in 26.0.25, 25.0.100, and 6.8.165.
Related Weaknesses (CWE)
References
- https://github.com/Intermesh/groupoffice/security/advisories/GHSA-9w92-p32g-g99p
- https://github.com/Intermesh/groupoffice/security/advisories/GHSA-9w92-p32g-g99p
FAQ
What is CVE-2026-45551?
CVE-2026-45551 is a documented vulnerability. Group-Office is an enterprise customer relationship management and groupware tool. Prior to 26.0.25, 25.0.100, and 6.8.165, GroupOffice allows authenticated users to persist arbitrary legacy settings ...
How severe is CVE-2026-45551?
CVSS scoring is not yet available for CVE-2026-45551. Check NVD for updates.
Is there a patch for CVE-2026-45551?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.