CVE-2025-61987

EUVD-2025-203021
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
jpcertCNA
5.3 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 6%
Affected Products (NVD)
VendorProductVersion
groupsessiongroupsession
𝑥
< 5.3.0
groupsessiongroupsession
𝑥
< 5.3.2
groupsessiongroupsession
𝑥
< 5.3.3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://groupsession.jp/info/info-news/security20251208
https://jvn.jp/en/jp/JVN19940619/