The vulnerability in tarteaucitron.js arises due to insufficient URL validation, allowing privileged users to inject malicious URL schemes (e.g., javascript:alert()). When an attacker modifies a URL input field in the CMS or source code, the library fails to sanitize or restrict unsafe schemes. If a victim clicks the injected link, arbitrary JavaScript executes in their browser context. The flaw stems from the absence of strict protocol checks before rendering URLs, enabling XSS-like exploitation despite high-privilege requirements.
DailyCVE Form
Platform: tarteaucitron.js
Version: <2fa1e01
Vulnerability: URL scheme injection
Severity: Moderate
Date: 2025-04-07
What Undercode Say:
Exploit:
1. Attacker gains CMS/admin access.
2. Injects `javascript:payload` into URL field.
3. Victim clicks link, triggering execution.
PoC:
<a href="javascript:alert('XSS')">Click</a>
Protection:
1. Update to tarteaucitron.js ≥2fa1e01.
2. Implement client/server-side URL validation:
function validateURL(url) {
return /^https?:\/\//.test(url);
}
3. Use CSP headers:
Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline' 'unsafe-eval'
Analytics:
- CVSS: 6.5 (Medium)
- Attack Vector: Network
- Privilege Required: High
Commands:
- Check version:
grep "version" tarteaucitron.js
- Patch via npm:
npm update tarteaucitron.js
Mitigation Code:
// Sanitize URLs before rendering
const safeURL = url.startsWith('http') ? url : '';
References:
References:
Reported By: https://github.com/advisories/GHSA-p5g4-v748-6fh8
Extra Source Hub:
Undercode
