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Status published
Medium
CVE-2025-61987
GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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Affected Vendor
Japan Total System Co.,Ltd.
View all reports →Affected Software
GroupSession Free edition, GroupSession byCloud, GroupSession ZION
Vulnerable Versions:
prior to ver5.3.0, prior to ver5.3.3, prior to ver5.3.2
Timeline
Official Publish:
December 12th, 2025
Last Modified:
December 12th, 2025
Added to House:
July 22nd, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses (CWE)
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.