Stored cross-site scripting in Japan Total System products - CVE-2025-54407
Published: December 8, 2025
Vulnerability identifier: #VU119241
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2025-54407
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Affected software
GroupSession Free edition
GroupSession ZION
GroupSession byCloud
GroupSession ZION
GroupSession byCloud
How to mitigate CVE-2025-54407
Install updates from vendor's website.
GroupSession Free edition - update to 5.3.0
GroupSession ZION - update to 5.3.2
GroupSession byCloud - update to 5.3.3
GroupSession ZION - update to 5.3.2
GroupSession byCloud - update to 5.3.3