CVE-2025-40631

HTTP host header injection vulnerability in IceWarp Mail Server

Published May 16, 2025 CVSS 4.0 · 2 Low EPSS < 1% KEV · Not listed
Description
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.

Remediation

Vendor Solution

The vulnerabilities have been fixed by the IceWarp team in the 13.0.2 version.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-15437 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.
History
Type Values Removed Values Added
First Time appeared Icewarp
Icewarp mail Server
CPEs cpe:2.3:a:icewarp:mail_server:11.4.0:*:*:*:*:*:*:*
Vendors & Products Icewarp
Icewarp mail Server
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description 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.
Title HTTP host header injection vulnerability in IceWarp Mail Server
Weaknesses CWE-644
References
Metrics cvssV4_0

{'score': 2, 'vector': 'CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
INCIBE
Published
Updated
May 16, 2025, 1:46 PM
Reserved
Apr 16, 2025, 8:38 AM
Status
Analyzed
Published
May 16, 2025, 11:15 AM
Modified
Jun 17, 2026, 9:21 AM