CVE-2025-61987: groupsession before 5.3.0 (exclusive), before 5.3.2 (exclusive), before 5.3.3 (exclusive); +3 more affected products

Affected technology

groupsession · before 5.3.0 (exclusive)
groupsession

groupsession · before 5.3.2 (exclusive)
groupsession

groupsession · before 5.3.3 (exclusive)
groupsession

GroupSession Free edition · prior to ver5.3.0
Japan Total System Co.,Ltd.

GroupSession byCloud · prior to ver5.3.3
Japan Total System Co.,Ltd.

GroupSession ZION · prior to ver5.3.2
Japan Total System Co.,Ltd.

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

The source says if a user accesses a crafted page, Chat information sent to the user may be exposed. Vendor/CNA’s CVSS 4.0 assessment (base score 6.9/10) rates confidentiality impact as low; integrity and availability impact as none.