Vulnerability · Published Dec 12, 2025 · Assigned by jpcert
CVE-2025-65120
Medium 6.1
In plain English
A medium-severity cross-site scripting in GroupSession byCloud from Japan Total System Co.,Ltd.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 3.0)6.1Medium
Exploit odds (30 days)0.2%top 91.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Japan Total System Co.,Ltd. | GroupSession Free edition | prior to ver5.7.1 |
| Japan Total System Co.,Ltd. | GroupSession byCloud | prior to ver5.7.1 |
| Japan Total System Co.,Ltd. | GroupSession ZION | prior to ver5.7.1 |
Weakness: CWE-79 · Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N