What’s Vulnerable › Vulnerabilities

CVE-2025-48366: GroupOffice's Blind Stored XSS in Phone Number Field Enables Forced Redirect and Unauthorized Actions

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-22 · updated 2026-06-17
• Weakness: CWE-79

Description

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.119 and 25.0.20, a stored and blind XSS vulnerability exists in the Phone Number field of the user profile within the GroupOffice application. This allows a malicious actor to inject persistent JavaScript payloads, which are triggered in the context of another user when they view the Address Book. Successful exploitation enables actions such as forced redirects, unauthorized fetch requests, or other arbitrary JavaScript execution without user interaction. Versions 6.8.119 and 25.0.20 contain a fix for the issue.

Affected products

• Intermesh Group-Office: before 6.8.199; from 25.0.1 before 25.0.20 — fixed in 25.0.20, 6.8.199

How to fix

Upgrade to a fixed version: Intermesh Group-Office 25.0.20, 6.8.199. Check the vendor advisory for mitigations.

References

• https://github.com/Intermesh/groupoffice/security/advisories/GHSA-phhq-3h8f-qxpx
• https://github.com/Intermesh/groupoffice/security/advisories/GHSA-phhq-3h8f-qxpx

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