CVE-2025-66284

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector : AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://groupsession.jp/info/info-news/security20251208	Vendor Advisory
https://jvn.jp/en/jp/JVN19940619/	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:groupsession:groupsession:::::bycloud:::*
	cpe:2.3:a:groupsession:groupsession:::::free:::*
	cpe:2.3:a:groupsession:groupsession:::::zion:::*

History

07 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Existen vulnerabilidades de cross-site scripting almacenado en GroupSession Free edition anterior a la ver5.7.1, GroupSession byCloud anterior a la ver5.7.1 y GroupSession ZION anterior a la ver5.7.1. Un usuario con sesión iniciada puede preparar una página o URL maliciosa, y un script arbitrario puede ser ejecutado en el navegador web cuando otro usuario accede a ella.

Information

Published : 2025-12-12 05:16

Updated : 2026-10-07 20:10

NVD link : CVE-2025-66284

Mitre link : CVE-2025-66284

CVE.ORG link : CVE-2025-66284

JSON object : View

Products Affected

groupsession

groupsession

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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