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.

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Fixes

Solution

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Workaround

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History

Tue, 10 Nov 2026 16:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Group-Office: Stored XSS via Manual Reminders
Weaknesses CWE-79
CWE-80
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-11-10T16:35:20.103Z

Reserved: 2026-07-14T23:10:57.033Z

Link: CVE-2026-63010

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-11-10T17:17:45.800

Modified: 2026-11-10T17:17:45.800

Link: CVE-2026-63010

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses