CVE-2025-61987
GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. do not validate origins in WebSockets. If a user accesses a crafted page, Chat information sent to the user may be exposed.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.9
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- EPSS probability
- 0.15%
- CWE
- CWE-1385
- Published
- 2025-12-12
- Last modified
- 2026-03-12
Affected products
- Japan Total System Co.,Ltd. GroupSession Free edition
- Japan Total System Co.,Ltd. GroupSession byCloud
- Japan Total System Co.,Ltd. GroupSession ZION
Weakness type
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