CVE-2026-63010— Group-Office: Stored XSS via Manual Reminders

Quick assessment

Affected

Intermesh groupoffice

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Group-Office 是一款企业级客户关系管理及协同办公工具。在版本 6.8.172、25.0.108 和 26.0.33 之前，低权限用户可以创建包含任意 HTML/JavaScript 的手动提醒，并将其分配给任何其他用户（包括管理员）。当受害者的浏览器轮询待处理通知时，恶意载荷会以未过滤的 innerHTML 形式在 ExtJS 通知面板中渲染，从而触发存储型跨站脚本攻击（Stored XSS），最终导致受害者会话被完全接管（Account Takeover, ATO）。该问题已在版本 6.8.172、2

CVSS 8.7 · High Updated Nov 11, 2026

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Vulnerability Information

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Vulnerability Title

Group-Office: Stored XSS via Manual Reminders

Source: CVE Program / CVE List V5

Vulnerability 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.

Source: CVE Program / CVE List V5

CVSS Information

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

Source: CVE Program / CVE List V5

Vulnerability Type

Web页面中脚本相关HTML标签转义处理不恰当(基本跨站脚本)

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Intermesh	groupoffice	< 6.8.172	-

II. Public POCs for CVE-2026-63010

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-63010

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Other References for CVE-2026-63010 (4)

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

https://www.cve.org/CVERecord?id=CVE-2026-63010

Same Patch Batch · Intermesh · 2026-11-10 · 3 CVEs total

CVE-2026-63011	9.4 CRITICAL	GroupOffice Vulnerable to RCE in TemplateParser eval() via Contact/labels
CVE-2026-63653	5.0 MEDIUM	Group-Office: SSRF via Bookmark/description JMAP action — server makes arbitrary HTTP(S) r

IV. Related Vulnerabilities

Same product: groupoffice

Same vendor: Intermesh

Same weakness: CWE-80