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.
Advisories

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Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 12 Dec 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 12 Dec 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Groupsession
Groupsession groupsession
Groupsession groupsession Bycloud
Groupsession groupsession Zion
Vendors & Products Groupsession
Groupsession groupsession
Groupsession groupsession Bycloud
Groupsession groupsession Zion

Fri, 12 Dec 2025 05:15:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-79
References
Metrics cvssV3_0

{'score': 5.4, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 4.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2025-12-12T18:43:52.015Z

Reserved: 2025-11-27T05:41:59.736Z

Link: CVE-2025-66284

cve-icon Vulnrichment

Updated: 2025-12-12T18:43:46.882Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-12-12T05:16:12.230

Modified: 2025-12-12T15:17:31.973

Link: CVE-2025-66284

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-12T08:48:33Z

Weaknesses