What is the CVSS score of CVE-2025-48993?

CVE-2025-48993 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Group Office are affected by CVE-2025-48993?

Organizations using Group-Office should be aware of moderate risk from CVE-2025-48993, a cross-site scripting vulnerability rated CVSS 6.1.. A patch is available.

How to fix or mitigate CVE-2025-48993?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Group Office CVE-2025-48993

EUVD-2025-18452 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-06-17 security-advisories@github.com

Microsoft XSS Group Office

6.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.1 MEDIUM

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 14, 2026 - 22:15 euvd

EUVD-2025-18452

Analysis Generated

Mar 14, 2026 - 22:15 vuln.today

Patch released

Mar 14, 2026 - 22:15 nvd

Patch available

CVE Published

Jun 17, 2025 - 01:15 nvd

MEDIUM 6.1

DescriptionGitHub Advisory

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.

Analysis

Technical ContextAI

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

RemediationAI

A vendor patch is available — apply it immediately. Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.