CVE-2025-66284CWE-79cross-site-scripting

CVE-2025-66284

Medium · published December 12, 2025

CVSS v3.0
5.4
EPSS
0%
Percentile
6.4
In the wild
Unconfirmed
What it is

Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1. A logged-in user can prepare a malicious page or URL, and an arbitrary script may be executed on the web browser when another user accesses it.

The record
Technical detail
CVSS v3.0
5.4 · MEDIUM
Vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00173 · 6.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-12-12T10:16Z
Affected products (3)
ProductVersionsFixed in
groupsession/groupsession< 5.7.15.7.1
groupsession/groupsession< 5.7.15.7.1
groupsession/groupsession< 5.7.15.7.1
References (2)
https://groupsession.jp/info/info-news/security20251208 · [email protected]https://jvn.jp/en/jp/JVN19940619/ · [email protected]
EPSS history
Timeline
  • 12 DEC 05:01Z
    Stored cross-site scripting vulnerabilities exist in GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION…
    cvelistv5