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How CVE-2025-1949 Works
The vulnerability in ZZCMS 2025 arises from improper sanitization of the `$_SERVER[‘PHP_SELF’]` parameter in the `/3/ucenter_api/code/register_nodb.php` file. Attackers can inject malicious JavaScript payloads via crafted URLs, which are then reflected in the output without proper encoding. Since the application fails to validate or escape user-supplied input, the payload executes in the victim’s browser, leading to session hijacking, phishing, or defacement. The attack is remotely exploitable with low complexity, requiring only social engineering to trick users into visiting a malicious link.
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Platform: ZZCMS
Version: 2025
Vulnerability: XSS
Severity: Medium
Date: 04/23/2025
What Undercode Say:
Exploitation:
1. Craft a malicious URL:
http://target.com/3/ucenter_api/code/register_nodb.php/%22%3E%3Cscript%3Ealert(1)%3C/script%3E
2. Send the link to victims via email or social engineering.
Detection:
Use grep to find vulnerable code:
grep -r "\$_SERVER['PHP_SELF']" /var/www/zzcms/
Mitigation:
1. Patch the file by sanitizing input:
echo htmlspecialchars($_SERVER['PHP_SELF'], ENT_QUOTES, 'UTF-8');
2. Apply WAF rules to block XSS payloads:
location ~ /3/ucenter_api/ {
set $block_xss 0;
if ($args ~ "<script") { set $block_xss 1; }
if ($block_xss = 1) { return 403; }
}
Analysis Tools:
- Burp Suite: Scan for reflected XSS.
- OWASP ZAP: Automated XSS detection.
- Manual Testing:
fetch('/3/ucenter_api/code/register_nodb.php/test%22onload%3Dalert(1)')
Log Monitoring:
Check Apache logs for XSS attempts:
tail -f /var/log/apache2/access.log | grep -i "script"
References:
- VulDB Entry
- OWASP XSS Cheat Sheet
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
