CVE-2025-7941: Time Table Generator System XSS Vulnerability

CVE-2025-7941 Overview

CVE-2025-7941 is a stored cross-site scripting (XSS) vulnerability [CWE-79] in PHPGurukul Time Table Generator System 1.0. The flaw resides in the /admin/profile.php script, where the adminname parameter is processed without adequate output encoding or input sanitization. An authenticated attacker with low-privilege administrative access can inject arbitrary JavaScript that executes in the browser session of any user who views the affected profile page. The exploit has been publicly disclosed, increasing the likelihood of opportunistic abuse against exposed installations.

Critical Impact
Successful exploitation allows attackers to execute script in the context of an administrator's browser, enabling session theft, credential harvesting, or malicious actions performed on behalf of the victim.

Affected Products

PHPGurukul Time Table Generator System 1.0
Component: /admin/profile.php
Vulnerable parameter: adminname

Discovery Timeline

2025-07-21 - CVE-2025-7941 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-7941

Vulnerability Analysis

The vulnerability affects the administrator profile management workflow. The adminname argument submitted to /admin/profile.php is stored and later rendered back to the page without HTML entity encoding. When an attacker submits a payload containing HTML or JavaScript, the browser interprets that content as active markup rather than data.

Because the injection point lives on the admin profile page, the resulting script executes in a privileged context. Attackers can leverage this to hijack sessions, modify configuration, or pivot into other authenticated functionality. The attack is network-reachable and only requires low-privileged authentication combined with user interaction to trigger.

Root Cause

The root cause is missing input validation and output encoding on the adminname field in /admin/profile.php. The application trusts user-supplied profile data and echoes it back into HTML responses without applying context-aware escaping such as htmlspecialchars(). This maps directly to CWE-79, Improper Neutralization of Input During Web Page Generation.

Attack Vector

An attacker with an authenticated admin account submits a crafted value in the adminname field via the profile update function. When the profile page is subsequently rendered, the injected payload executes in the victim's browser. Refer to the GitHub Issue Report and VulDB #317082 for technical detail on the payload and reproduction steps.

Detection Methods for CVE-2025-7941

Indicators of Compromise

HTTP POST requests to /admin/profile.php containing <script>, onerror=, onload=, or encoded variants in the adminname parameter.
Unexpected outbound requests from administrator browsers to attacker-controlled domains shortly after visiting the profile page.
Database records where the stored adminname value contains HTML tags or JavaScript event handlers.

Detection Strategies

Inspect web server access logs for anomalous character sequences (<, >, %3C, %3E) in requests to /admin/profile.php.
Deploy Web Application Firewall (WAF) rules that flag XSS payloads targeting the adminname parameter.
Perform database queries against the admin user table to identify stored payloads in profile fields.

Monitoring Recommendations

Enable Content Security Policy (CSP) reporting to capture unexpected inline script execution attempts on admin pages.
Monitor administrator session activity for privilege actions that originate immediately after profile page rendering.
Alert on repeated failed input validation events against /admin/* endpoints.

How to Mitigate CVE-2025-7941

Immediate Actions Required

Restrict network access to the /admin/ directory to trusted management IP addresses.
Audit all administrator accounts and reset credentials to invalidate any hijacked sessions.
Review the admin user records in the database for previously injected HTML or JavaScript content and purge malicious values.

Patch Information

At time of publication, PHPGurukul has not published a vendor advisory for CVE-2025-7941. Consult the PHP Gurukul Resource for vendor updates and the VulDB CI #317082 entry for tracking remediation status.

Workarounds

Apply server-side input validation on the adminname parameter to reject HTML metacharacters and script content.
Wrap all output of adminname in htmlspecialchars($value, ENT_QUOTES, 'UTF-8') before rendering.
Deploy a WAF signature that blocks XSS payloads targeting /admin/profile.php.
Enforce a strict Content Security Policy that disallows inline scripts on administrative pages.

bash

# Example Apache mod_security rule to block XSS payloads on the vulnerable endpoint
SecRule REQUEST_URI "@streq /admin/profile.php" \
  "phase:2,chain,deny,status:403,id:1007941,msg:'CVE-2025-7941 XSS attempt blocked'"
  SecRule ARGS:adminname "@rx (?i)(<script|onerror=|onload=|javascript:)" "t:none,t:urlDecodeUni"