CVE-2026-63010
Group-Office: Stored XSS via Manual Reminders
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| groupoffice Intermesh |
< 6.8.172 (affected) < 25.0.108 (affected) < 26.0.33 (affected) |
CNA: GitHub_M |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.7 high |
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 | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/Intermesh/groupoffice/security/advisories/GHSA-jw34-6g49-r6cwCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/Intermesh/groupoffice/releases/tag/v25.0.108CNA: GitHub_M · x_refsource_MISC
- https://github.com/Intermesh/groupoffice/releases/tag/v26.0.33CNA: GitHub_M · x_refsource_MISC
- https://github.com/Intermesh/groupoffice/releases/tag/v6.8.172CNA: GitHub_M · x_refsource_MISC
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