CVE-2026-23887: Group-Office has stored XSS vulnerability via unsanitized filenames
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-23887?
The severity of CVE-2026-23887 is considered high due to potential exploitation through stored XSS attacks.
How do I fix CVE-2026-23887?
To fix CVE-2026-23887, upgrade Group-Office to version 6.8.149 or later, or to version 25.0.80 or later.
Which versions of Group-Office are affected by CVE-2026-23887?
CVE-2026-23887 affects versions 6.8.148 and below, as well as versions 25.0.1 through 25.0.79 of Group-Office.
What type of vulnerability is CVE-2026-23887?
CVE-2026-23887 is a stored cross-site scripting (XSS) vulnerability caused by unsanitized filenames being stored in the database.
Who is impacted by CVE-2026-23887?
Users and administrators of Group-Office versions affected by CVE-2026-23887 may face security risks associated with stored XSS.