CVE-2025-66284_CVE-2025-66284

5.4 / 10

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Basic Information

ID CVE-2025-66284

Source jpcert

Published Dec 12, 2025 at 05:01

Affected Product

Vendor Japan Total System Co.,Ltd.

Product GroupSession Free edition

Version prior to ver5.7.1

Affected Versions Japan Total System Co.,Ltd. GroupSession Free edition prior to ver5.7.1
Japan Total System Co.,Ltd. GroupSession byCloud prior to ver5.7.1
Japan Total System Co.,Ltd. GroupSession ZION prior to ver5.7.1

CWE Classification

CWE-79

References

{
    "lastseen": "",
    "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.",
    "published": "2025-12-12T05:01:37.675Z",
    "modified": "2025-12-12T05:01:37.675Z",
    "type": "cve",
    "title": "CVE-2025-66284",
    "source": "jpcert",
    "references": "https://groupsession.jp/info/info-news/security20251208\nhttps://jvn.jp/en/jp/JVN19940619/",
    "id": "CVE-2025-66284",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "Japan Total System Co.,Ltd. GroupSession Free edition prior to ver5.7.1\nJapan Total System Co.,Ltd. GroupSession byCloud prior to ver5.7.1\nJapan Total System Co.,Ltd. GroupSession ZION prior to ver5.7.1",
    "sourceHref": "",
    "cvss": {
        "score": 5.4,
        "severity": "MEDIUM",
        "vector": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
        "version": "3.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "GroupSession Free edition",
    "version": "prior to ver5.7.1",
    "vendor": "Japan Total System Co.,Ltd.",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}