CVE-2025-48369: group-office XSS — Exploit & Fix

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.119 and 25.0.20, a persistent Cross-Site Scripting (XSS) vulnerability exists in Groupoffice's tasks comment functionality, allowing attackers to execute arbitrary JavaScript by uploading an file with a crafted filename. When administrators or other users view the task containing this malicious file, the payload executes in their browser context. The application fails to sanitize image filenames before rendering them in the comment. By uploading an image with a crafted filename containing XSS payloads, attackers can steal sensitive information. Versions 6.8.119 and 25.0.20 contain a fix for the issue.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
intermesh	group-office	< 6.8.199
intermesh	group-office	25.0.1 — 25.0.20

References

Advisories & Patches

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-45jj-r48j-75pp https://github.com/Intermesh/groupoffice/security/advisories/GHSA-45jj-r48j-75pp

Exploits

https://github.com/Intermesh/groupoffice/security/advisories/GHSA-45jj-r48j-75pp https://github.com/Intermesh/groupoffice/security/advisories/GHSA-45jj-r48j-75pp

Frequently Asked Questions

What is CVE-2025-48369? +

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.119 and 25.0.20, a persistent Cross-Site Scripting (XSS) vulnerability exists in Groupoffice's tasks comment functionality, allowing attackers to execute arbitrary JavaScript by uploading an file with a crafted filename. When administrators or other users view the task containing this malicious file, the payload executes in their browser context. The application fails to sanitize image filenames before rendering them in the comment. By uploading an image with a crafted filename containing XSS payloads, attackers can steal sensitive information. Versions 6.8.119 and 25.0.20 contain a fix for the issue. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-48369? +

CVE-2025-48369 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-48369? +

CVE-2025-48369 affects products from intermesh, specifically: group-office. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-48369? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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