CVE-2026-45551

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/Intermesh/groupoffice/security/advisories/GHSA-9w92-p32g-g99p
https://github.com/Intermesh/groupoffice/security/advisories/GHSA-9w92-p32g-g99p

Configurations

No configuration.

History

29 May 2026, 14:16

Type	Values Removed	Values Added
References	~~() https://github.com/Intermesh/groupoffice/security/advisories/GHSA-9w92-p32g-g99p -~~	() https://github.com/Intermesh/groupoffice/security/advisories/GHSA-9w92-p32g-g99p -

29 May 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-29 13:16

Updated : 2026-05-29 16:29

NVD link : CVE-2026-45551

Mitre link : CVE-2026-45551

CVE.ORG link : CVE-2026-45551

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-639

Authorization Bypass Through User-Controlled Key

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