Group-Office is an enterprise customer relationship management and groupware tool. Prior to 26.0.25, 25.0.100, and 6.8.165, GroupOffice allows authenticated users to persist arbitrary legacy settings for any userid via index.php?r=core/saveSetting. A separate client-side sink in the email module injects the emailfontsize setting directly into JavaScript without escaping. By combining these two issues, any low-privileged authenticated user can overwrite an administrator's emailfontsize setting with a JavaScript payload and trigger stored XSS in the administrator's browser when the GroupOffice web client loads views/Extjs3/modulescripts.php. This vulnerability is fixed in 26.0.25, 25.0.100, and 6.8.165.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.156, 25.0.90, and 26.0.12, a vulnerability in the AbstractSettingsCollection model leads to insecure deserialization when these settings are loaded. By injecting a serialized FileCookieJar object into a setting string, an authenticated attacker can achieve Arbitrary File Write, leading directly to Remote Code Execution (RCE) on the server. This issue has been patched in versions 6.8.156, 25.0.90, and 26.0.12.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.158, 25.0.92, and 26.0.17, an authenticated SQL Injection vulnerability in the JMAP Contact/query endpoint allows any authenticated user with basic addressbook access to extract arbitrary data from the database — including active session tokens of other users. This enables full account takeover of any user, including the System Administrator, without knowing their password. Versions 6.8.158, 25.0.92, and 26.0.17 fix the issue.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.155, 25.0.88, and 26.0.10, there is a reflected XSS vulnerability in GroupOffice on the external/index flow. The f parameter (Base64 JSON) is decoded and then injected into an inline JavaScript block without strict escaping, allowing </script><script>...</script> injection and arbitrary JavaScript execution in the victim's browser. This issue has been patched in versions 6.8.155, 25.0.88, and 26.0.10.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.155, 25.0.88, and 26.0.10, there is a reflected XSS vulnerability in the GroupOffice installer, endpoint install/license.php. The POST field license is rendered without escaping inside a <textarea>, allowing a </textarea><script>...</script> breakout.. This issue has been patched in versions 6.8.155, 25.0.88, and 26.0.10.

Group-Office is an enterprise customer relationship management and groupware tool. Versions prior to 26.0.9, 25.0.87, and 6.8.154 have an authenticated Remote Code Execution vulnerability in the TNEF attachment processing flow. The vulnerable path extracts attacker-controlled files from winmail.dat and then invokes zip with a shell wildcard (). Because extracted filenames are attacker-controlled, they can be interpreted as zip options and lead to arbitrary command execution. Versions 26.0.9, 25.0.87, and 6.8.154 fix the issue.

Group-Office is an enterprise customer relationship management and groupware tool. Versions prior to 26.0.8, 25.0.87, and 6.8.153 have a SQL Injection (SQLi) vulnerability, exploitable through the advancedQueryData parameter (comparator field) on an authenticated endpoint. The endpoint index.php?r=email/template/emailSelection processes advancedQueryData and forwards the SQL comparator without a strict allowlist into SQL condition building. This enables blind boolean-based exfiltration of the coreauthpassword table. Versions 26.0.8, 25.0.87, and 6.8.153 fix the issue.

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.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, there is a remote code execution (RCE) vulnerability in Group-Office. The endpoint email/message/tnefAttachmentFromTempFile directly concatenates the user-controlled parameter tmpfile into an exec() call. By injecting shell metacharacters into tmpfile, an authenticated attacker can execute arbitrary system commands on the server. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to 6.8.150, 25.0.82, and 26.0.5, the MaintenanceController exposes an action zipLanguage which takes a lang parameter and passes it directly to a system zip command via exec(). This can be combined with uploading a crafted zip file to achieve remote code execution. This vulnerability is fixed in 6.8.150, 25.0.82, and 26.0.5.

Group-Office is an enterprise customer relationship management and groupware tool. In versions 6.8.148 and below, and 25.0.1 through 25.0.79, the application stores unsanitized filenames in the database, which can lead to Stored Cross-Site Scripting (XSS). Users who interact with these specially crafted file names within the Group-Office application are affected. While the scope is limited to the file-viewing context, it could still be used to interfere with user sessions or perform unintended actions in the browser. This issue is fixed in versions 6.8.149 and 25.0.80.

An issue in Intermesh BV GroupOffice vulnerable before v.25.0.47 and 6.8.136 allows a remote attacker to execute arbitrary code via the dbToApi() and eval() in the FunctionField.php

Group-Office versions prior to 6.8.119 and prior to 25.0.20 provided by Intermesh BV contain a path traversal vulnerability. If this vulnerability is exploited, information on the server hosting the product may be exposed.

Group-Office versions prior to 6.8.119 and prior to 25.0.20 provided by Intermesh BV contain a cross-site scripting vulnerability. If this vulnerability is exploited, an arbitrary script may be executed in the user's web browser.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.123 and 25.0.27, a malicious JavaScript payload can be executed via the Look and Feel formatting fields. Any user can update their Look and Feel Formatting input fields, but the web application does not sanitize their input. This could result in a reflected cross-site scripting (XSS) attack. This issue has been patched in versions 6.8.123 and 25.0.27.

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.123 and 25.0.27, a stored and blind cross-site scripting (XSS) vulnerability exists in the Name Field of the user profile. A malicious attacker can change their name to a javascript payload, which is executed when a user adds the malicious user to their Synchronization > Address books. This issue has been patched in versions 6.8.123 and 25.0.27.

Group-Office is an enterprise CRM and groupware tool. This Stored XSS vulnerability exists where user input in the Name field is not properly sanitized before being stored. This vulnerability is fixed in 6.8.100.

Cross-site scripting vulnerability exists in Group Office prior to v6.6.182, prior to v6.7.64 and prior to v6.8.31, which may allow a remote authenticated attacker to execute an arbitrary script on the web browser of the user who is logging in to the product.

Group-Office is an enterprise CRM and groupware tool. Affected versions are subject to a vulnerability which is present in the file upload mechanism of Group Office. It allows an attacker to execute arbitrary JavaScript code by embedding it within a file's name. For instance, using a filename such as “><img src=x onerror=prompt('XSS')>.jpg” triggers the vulnerability. When this file is uploaded, the JavaScript code within the filename is executed. This issue has been addressed in version 6.8.29. All users are advised to upgrade. There are no known workarounds for this vulnerability.

Group-Office is an enterprise CRM and groupware tool. In affected versions there is full Server-Side Request Forgery (SSRF) vulnerability in the /api/upload.php endpoint. The /api/upload.php endpoint does not filter URLs which allows a malicious user to cause the server to make resource requests to untrusted domains. Note that protocols like file:// can also be used to access the server disk. The request result (on success) can then be retrieved using /api/download.php. This issue has been addressed in versions 6.8.15, 6.7.54, and 6.6.177. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Reflected Cross Site Scripting (XSS) in Intermesh BV Group-Office version 6.6.145, allows attackers to gain escalated privileges and gain sensitive information via the GOLANGUAGE cookie.

A Server-Side Request Forgery (SSRF) vulnerability in Group Office 6.4.196 allows a remote attacker to forge GET requests to arbitrary URLs via the url parameter to group/api/upload.php.

Cross Site Scripting (XSS) in the contact page of Group Office CRM 6.4.196 by uploading a crafted svg file.

Cross Site Scripting (XSS) in Group Office CRM 6.4.196 via the SETLANGUAGE parameter.

SQL injection vulnerability in modules/calendar/json.php in Group-Office community before 4.0.90 allows remote authenticated users to execute arbitrary SQL commands via the sort parameter.

Group-Office before 2.16-13 does not properly validate user IDs, which allows remote attackers to obtain sensitive information via certain requests for (1) message.php and (2) messages.php in modules/email/. NOTE: some of these details are obtained from third party information.