CVE-2025-61987 MEDIUM

CVE-2025-61987

Vendor Japan Total System Co.,Ltd.
Product GroupSession Free edition
Weakness CWE-1385
Published December 12, 2025
Last update December 12, 2025
View on NVD All CVEs

CVSS base score

5.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity None

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 12, 2025 CVE published
December 12, 2025 Record updated