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CVE-2026-25511— Group-Office is vulnerable to SSRF and File Read in WOPI service discovery

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是荷兰Group Office公司的一款模块化的办公套件。 Group Office 6.8.150之前版本、25.0.82之前版本和26.0.5之前版本存在代码问题漏洞，该漏洞源于WOPI服务发现URL存在服务端请求伪造，可能导致访问内部主机或端口以及服务器端文件读取。

AI Predicted 8.6 Difficulty: Easy EPSS 0.47% · P39
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I. Basic Information for CVE-2026-25511

Vulnerability Information
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Vulnerability Title
Group-Office is vulnerable to SSRF and File Read in WOPI service discovery
Source: CVE Program / CVE List V5
Vulnerability Description
Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, an authenticated user within the System Administrator group can trigger a full SSRF via the WOPI service discovery URL, including access to internal hosts/ports. The SSRF response body can be exfiltrated via the built‑in debug system, turning it into a visible SSRF. This also allows full server-side file read. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Group Office 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Group Office是荷兰Group Office公司的一款模块化的办公套件。 Group Office 6.8.150之前版本、25.0.82之前版本和26.0.5之前版本存在代码问题漏洞，该漏洞源于WOPI服务发现URL存在服务端请求伪造，可能导致访问内部主机或端口以及服务器端文件读取。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Intermesh groupoffice < 6.8.150 -

II. Public POCs for CVE-2026-25511

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III. Intelligence Information for CVE-2026-25511

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Vendor Advisories for CVE-2026-25511 (1)

IV. Related Vulnerabilities

Same product: groupoffice
Same vendor: Intermesh
Same weakness: CWE-918

V. Comments for CVE-2026-25511

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