CVE-2025-40631

HTTP host header injection vulnerability in Icewarp Mail Server affecting version 11.4.0. By modifying the Host header and adding a payload, arbitrary JavaScript code can be executed on page load. The user must interact with a malicious link to be redirected.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:icewarp:mail_server:11.4.0:*:*:*:*:*:*:*

History

09 Oct 2025, 19:31

Type	Values Removed	Values Added
References	~~() https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server -~~	() https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-icewarp-mail-server - Third Party Advisory
CPE		cpe:2.3:a:icewarp:mail_server:11.4.0:::::::*
First Time		Icewarp mail Server Icewarp
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1

16 May 2025, 14:42

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-05-16 11:15

Updated : 2025-10-09 19:31

NVD link : CVE-2025-40631

Mitre link : CVE-2025-40631

CVE.ORG link : CVE-2025-40631

JSON object : View

Products Affected

icewarp

mail_server

CWE

CWE-644

Improper Neutralization of HTTP Headers for Scripting Syntax

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