CVE-2025-64781

In GroupSession Free edition prior to ver5.7.1, GroupSession byCloud prior to ver5.7.1, and GroupSession ZION prior to ver5.7.1, "External page display restriction" is set to "Do not limit" in the initial configuration. With this configuration, the user may be redirected to an arbitrary website when accessing a specially crafted URL.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

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

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

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

17 Feb 2026, 15:14

Type	Values Removed	Values Added
References	~~() https://groupsession.jp/info/info-news/security20251208 -~~	() https://groupsession.jp/info/info-news/security20251208 - Vendor Advisory
References	~~() https://jvn.jp/en/jp/JVN19940619/ -~~	() https://jvn.jp/en/jp/JVN19940619/ - Third Party Advisory
CPE		cpe:2.3:a:groupsession:groupsession:::::free:::* cpe:2.3:a:groupsession:groupsession:::::zion:::* cpe:2.3:a:groupsession:groupsession:::::bycloud:::*
First Time		Groupsession Groupsession groupsession

12 Dec 2025, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-12 05:16

Updated : 2026-02-17 15:14

NVD link : CVE-2025-64781

Mitre link : CVE-2025-64781

CVE.ORG link : CVE-2025-64781

JSON object : View

Products Affected

groupsession

groupsession

CWE

CWE-1188

Insecure Default Initialization of Resource

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