IceWarp gmaps Cross-Site Scripting Authentication Bypass Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to bypass authentication on affected installations of IceWarp. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the handling of a parameter passed to the gmaps webpage. The issue results from the lack of proper validation of user-supplied data, which can lead to the injection of an arbitrary script. An attacker can leverage this vulnerability to bypass authentication on the system.
Additional Details
IceWarp has issued an update to correct this vulnerability. More details can be found at:
https://support.icewarp.com/hc/en-us/community/posts/40040542307729-EPOS-Update-2-build-8-14-2-0-8
Disclosure Timeline
- 2025-08-20 - Vulnerability reported to vendor
- 2025-12-10 - Coordinated public release of advisory
- 2025-12-11 - Advisory Updated
Credit
Nicolas Chatelain
