CVE-2023-25292
MediumCVSS 6.1Exploitation Probability (EPSS)
Low risk44th percentile - higher than 44% of all known CVEs
Summary
A reflected Cross Site Scripting (XSS) vulnerability was found in Intermesh BV Group-Office version 6.6.145. Attackers can exploit the GO_LANGUAGE cookie to escalate privileges and obtain sensitive information.
Risk Assessment
The risk involves potential account takeover and theft of sensitive organizational data by a remote unauthenticated attacker.
Recommendation
Immediately update Group-Office to the latest version and implement XSS protection mechanisms such as Content Security Policy.
Other vulnerabilities in Group-Office
See all- CVE-2026-34838Critical
Group-Office prior to versions 6.8.156, 25.0.90, and 26.0.12 has a vulnerability in the AbstractSettingsCollection model leading to insecure deserialization, allowing arbitrary file write and remote code execution.
- CVE-2018-25438High
Intermesh Group-Office 3.3.0 before 3.5.5 contains an unauthenticated path traversal vulnerability in compress.php that allows remote attackers to read arbitrary files by manipulating the 'file' parameter. Attackers can send GET requests to /compress.php with '../' sequences in the 'file' parameter, which is appended to the cache path and passed to readfile(), to read files such as /etc/passwd.
- CVE-2026-45551Medium
In Group-Office prior to versions 26.0.25, 25.0.100, and 6.8.165, authenticated users can persist arbitrary legacy settings for any user_id. A separate issue in the email module injects the email_font_size setting directly into JavaScript without escaping. A low-privileged user can overwrite an administrator's email_font_size setting with a JavaScript payload and trigger stored XSS in the administrator's browser.
Original NVD description (English source)
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 GO_LANGUAGE cookie.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS