CVE-2026-125388— Group-Office before 6.8.181, 25.0.116, and 26.0.58 Missing Authorization in Forms Report Download

Quick assessment

Affected

Intermesh Group-Office

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.

Intermesh Group-Office 在 6.8.181、25.0.116 和 26.0.58 之前的版本中存在一个缺少授权检查的漏洞。该漏洞允许已认证用户通过下载表单报告，而无需经过权限验证。攻击者可利用表单 ID 请求资源，将每条提交记录导出为 XLSX 文件，从而泄露其无权查看的提交内容。

CVSS 6.5 · Medium Updated Nov 10, 2026

Possible ATT&CK Techniques 2 AI

T1537 · Transfer Data to Cloud Account T1038

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Vulnerability Information

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Vulnerability Title

Group-Office before 6.8.181, 25.0.116, and 26.0.58 Missing Authorization in Forms Report Download

Source: CVE Program / CVE List V5

Vulnerability Description

Intermesh Group-Office before 6.8.181, 25.0.116, and 26.0.58 contains a missing authorization vulnerability that allows authenticated users to download form reports via api/download.php without permission checks. Attackers can request the business/forms/report blob with a form ID to export every submission as an XLSX file, disclosing submissions they are not permitted to see.

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

授权机制缺失

Source: CVE Program / CVE List V5

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Intermesh	Group-Office	0 ~ 6.8.181	-

II. Public POCs for CVE-2026-125388

#	POC Description	Source Link	Shenlong Link

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III. Intelligence Information for CVE-2026-125388

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Other References for CVE-2026-125388 (3)

https://github.com/Intermesh/groupoffice/blob/v26.0.57/www/api/download.php#L89-L129 technical-description
https://github.com/Intermesh/groupoffice/security/advisories/GHSA-42qf-m3j9-837r vendor-advisory
https://www.vulncheck.com/advisories/group-office-before-6.8.181-25.0.116-and-26.0.58-missing-authorization-in-forms-report-download third-party-advisory

https://www.cve.org/CVERecord?id=CVE-2026-125388

Same Patch Batch · Intermesh · 2026-11-09 · 3 CVEs total

CVE-2026-125390	6.5 MEDIUM	Group-Office before 6.8.181, 25.0.116, and 26.0.58 Local File Read via processUploadQueue
CVE-2026-125389	6.1 MEDIUM	Group-Office before 6.8.181, 25.0.116, and 26.0.58 Stored XSS via filterXSS Bypass

IV. Related Vulnerabilities

Same product: Group-Office

Same vendor: Intermesh

Same weakness: CWE-862