CVE-2025-2061 Overview
CVE-2025-2061 is a reflected cross-site scripting (XSS) vulnerability in code-projects Online Ticket Reservation System 1.0. The flaw exists in the /passenger.php script, where the name parameter is rendered without proper output encoding or input sanitization. An unauthenticated remote attacker can craft a malicious URL that executes arbitrary JavaScript in the victim's browser when clicked. The exploit has been publicly disclosed, increasing the likelihood of opportunistic abuse against exposed instances. The vulnerability is tracked under CWE-79: Improper Neutralization of Input During Web Page Generation.
Critical Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in a victim's browser session, enabling session token theft, credential harvesting via injected forms, and unauthorized actions performed under the victim's identity within the reservation system.
Affected Products
- Fabian Online Ticket Reservation System 1.0
- Instances distributed via code-projects that expose /passenger.php
- Deployments that render the name parameter without sanitization
Discovery Timeline
- 2025-03-07 - CVE-2025-2061 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-2061
Vulnerability Analysis
The vulnerability resides in /passenger.php, a PHP script that processes passenger information within the reservation workflow. The name request parameter is reflected in the HTTP response without HTML entity encoding or input validation. This allows an attacker to inject arbitrary HTML and JavaScript that executes in the context of the vulnerable application's origin.
Because exploitation requires user interaction (clicking a crafted link), the attack is typically delivered through phishing emails, malicious advertisements, or third-party sites hosting the payload. The injected script executes with the same privileges as the victim's active session, allowing theft of authentication cookies, manipulation of displayed content, and forced actions against the reservation backend.
Root Cause
The root cause is missing output encoding for user-controlled input. The application echoes the name parameter directly into the generated HTML response. PHP's default rendering does not escape characters such as <, >, ", and ', so payloads containing <script> tags or event handlers execute in the browser. The absence of a Content Security Policy (CSP) header removes a defense-in-depth control that would otherwise limit inline script execution.
Attack Vector
The attack vector is remote and network-based. An attacker constructs a URL targeting /passenger.php with a malicious payload appended to the name parameter, then delivers the link to a target user. When the user visits the URL, the server reflects the payload into the response and the browser executes it. See the publicly disclosed proof-of-concept for payload construction details. Additional context is available at VulDB entry 298816.
Detection Methods for CVE-2025-2061
Indicators of Compromise
- Web server access logs containing requests to /passenger.php with name values including <script>, onerror=, javascript:, or URL-encoded equivalents such as %3Cscript%3E.
- HTTP referrers originating from unknown external domains immediately preceding requests to /passenger.php.
- Outbound browser connections from authenticated sessions to attacker-controlled domains shortly after a passenger form interaction.
Detection Strategies
- Deploy a web application firewall (WAF) rule set that flags common XSS payload patterns in query strings and form fields targeting /passenger.php.
- Enable verbose HTTP request logging and alert on non-alphanumeric characters in the name parameter beyond expected input length.
- Correlate reflected input patterns with subsequent anomalous session activity such as unexpected cookie transmissions.
Monitoring Recommendations
- Monitor for browser console errors and CSP violation reports if a policy is deployed in report-only mode.
- Track user complaints reporting redirects, unexpected pop-ups, or credential prompts within the reservation portal.
- Review outbound DNS logs for domains referenced in known XSS payload repositories.
How to Mitigate CVE-2025-2061
Immediate Actions Required
- Restrict public access to /passenger.php via network controls or authentication gating until a patched version is available.
- Apply server-side input validation to reject non-alphabetic characters in the name parameter where feasible.
- Deploy a strict Content Security Policy that disallows inline scripts and unauthorized script sources.
Patch Information
No vendor patch is currently referenced in the NVD entry for CVE-2025-2061. Organizations should monitor the code-projects site for updates and consider migrating to an actively maintained ticket reservation platform. Until an official fix is released, apply the workarounds below.
Workarounds
- Implement HTML entity encoding on all output that reflects the name parameter using PHP's htmlspecialchars($input, ENT_QUOTES, 'UTF-8') function.
- Set the HttpOnly and Secure flags on session cookies to reduce impact of session token theft via injected scripts.
- Add a WAF virtual patch that blocks requests to /passenger.php containing <, >, or common XSS keywords in the name parameter.
# Example ModSecurity rule to block reflected XSS attempts against /passenger.php
SecRule REQUEST_URI "@beginsWith /passenger.php" \
"chain,phase:2,deny,status:403,id:1002061,msg:'CVE-2025-2061 XSS attempt blocked'"
SecRule ARGS:name "@rx (?i)(<script|onerror=|onload=|javascript:|<img|<svg)" "t:none,t:urlDecodeUni"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
