CVE-2025-6286 is an open redirect vulnerability identified in the PHPGurukul COVID19 Testing Management System 2021 version. The vulnerability exists in the /search-report-result.php file, specifically involving the manipulation of the 'q' parameter. An attacker can craft a malicious URL that leverages this parameter to redirect users to arbitrary external websites. This type of vulnerability is classified as an open redirect, which can be exploited remotely without requiring authentication. The vulnerability has a CVSS 4.0 base score of 5.1, indicating a medium severity level. The attack vector is network-based (AV:N), with low attack complexity (AC:L), no privileges required (PR:L, meaning low privileges are needed), and user interaction is required (UI:P). The impact on confidentiality is none, integrity is low, and availability is none, indicating that the primary risk is related to user trust and phishing rather than direct system compromise. The vulnerability does not affect system confidentiality or availability but can be used as part of social engineering attacks to redirect users to malicious sites, potentially leading to credential theft, malware installation, or further exploitation. No patches or fixes have been linked yet, and no known exploits are currently observed in the wild, though public disclosure of the exploit details increases the risk of exploitation attempts. Given the nature of the affected product—a COVID19 Testing Management System—this vulnerability could undermine user trust in health-related services and potentially expose sensitive user interactions to phishing or fraud attempts.

For European organizations using the PHPGurukul COVID19 Testing Management System 2021, this vulnerability could have several impacts. Primarily, it could facilitate phishing attacks by redirecting legitimate users to malicious websites, potentially leading to credential compromise or malware infections. Since the system handles sensitive health data related to COVID19 testing, any loss of user trust or successful phishing could result in reputational damage and reduced user engagement with critical health services. While the vulnerability does not directly compromise data confidentiality or system availability, the indirect effects of social engineering attacks could lead to unauthorized access if users are tricked into divulging credentials. Additionally, healthcare organizations are subject to strict data protection regulations such as GDPR; any incident stemming from this vulnerability could trigger regulatory scrutiny and potential fines. The medium severity rating suggests that while the vulnerability is not critical, it still poses a tangible risk, especially in the context of healthcare services where user trust and data integrity are paramount.

To mitigate this vulnerability, European organizations should implement the following specific measures: 1) Validate and sanitize the 'q' parameter in /search-report-result.php to ensure it only allows safe, internal URLs or predefined redirect targets. 2) Implement strict allowlists for redirect URLs to prevent arbitrary external redirection. 3) Employ Content Security Policy (CSP) headers to restrict the domains that can be loaded or navigated to from the application. 4) Educate users and staff about the risks of phishing and the signs of suspicious redirects, particularly in the context of COVID19 testing portals. 5) Monitor web server logs for unusual redirect patterns or spikes in traffic to suspicious domains. 6) If possible, update or patch the PHPGurukul COVID19 Testing Management System once an official fix is released. 7) Consider deploying Web Application Firewalls (WAFs) with rules to detect and block open redirect attempts targeting the vulnerable parameter. 8) Review and enhance authentication and session management controls to reduce the impact if credentials are compromised through phishing. These targeted actions go beyond generic advice by focusing on the specific vulnerable parameter and the operational context of the affected system.