How the CVE Works
The vulnerability (CVE-2025-12345) in jQuery-Validation before v1.20.0 arises due to improper sanitization in the `showLabel()` function. Attackers can inject malicious scripts via user-controlled `placeholder` attributes, which are then processed by $.validator.messages. Since the dictionary is localizable, untrusted input can lead to stored or reflected XSS. When the validation error message renders, the injected script executes in the victim’s browser, compromising session data or performing unauthorized actions.
DailyCVE Form:
Platform: jQuery-Validation
Version: <1.20.0
Vulnerability: XSS via `showLabel()`
Severity: Moderate
Date: Apr 15, 2025
What Undercode Say:
Exploitation:
1. Payload Injection:
<input placeholder="<script>alert('XSS')</script>">
2. Trigger Validation: Force an error to execute showLabel().
Detection:
grep -r "showLabel" ./node_modules/jquery-validation/
Mitigation:
1. Upgrade:
npm install [email protected] --save
2. Sanitization Patch:
function sanitizeLabel(text) {
return $('
<
div>').text(text).html();
}
3. CSP Header:
Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline'
Analysis:
- Impact: Medium (DOM-based XSS)
- Exploit Complexity: Low (No auth required)
- Affected Configs: All uses of `placeholder` in validation rules.
References:
No additional commentary beyond the specified rules.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
