CVE-2026-63010

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.172, 25.0.108, and 26.0.33, a low-privileged user can create manual reminders containing arbitrary HTML/JavaScript and assign them to any other user (including administrators). When the victim's browser polls for pending notifications, the payload renders unsanitized as innerHTML in the ExtJS notification panel, achieving Stored Cross-Site Scripting (XSS) leading to full Account Takeover (ATO) of the victim's session. This issue has been patched in versions 6.8.172, 25.0.108, and 26.0.33.

• CWE-79
• CWE-80

• https://github.com/Intermesh/groupoffice/releases/tag/v25.0.108
• https://github.com/Intermesh/groupoffice/releases/tag/v26.0.33
• https://github.com/Intermesh/groupoffice/releases/tag/v6.8.172
• https://github.com/Intermesh/groupoffice/security/advisories/GHSA-jw34-6g49-r6cw

Published

Nov 10, 2026

Last Modified

Nov 13, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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