CVE-2025-54407
MEDIUMGroupSession Free <5.3.0, byCloud <5.3.3, ZION <5.3.2 - Stored Cross-Site Scripting
Title source: llmDescription
Stored cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.
References (2)
Core 2
Core References
Vendor Advisory
https://groupsession.jp/info/info-news/security20251208
Third Party Advisory
https://jvn.jp/en/jp/JVN19940619/
Scores
CVSS v3
6.1
EPSS
0.0015
EPSS Percentile
4.9%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (3)
groupsession/groupsession
< 5.3.0
groupsession/groupsession
< 5.3.2
groupsession/groupsession
< 5.3.3
Published
Dec 12, 2025
Tracked Since
Feb 18, 2026