Description

A security flaw has been discovered in PHPGurukul Bank Locker Management System 1.0. This impacts an unknown function of the file sidebar.php. The manipulation of the argument UserType results in improper access controls. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "6.3",
  "pubDate": "2026-09-13T12:17:16.237Z",
  "pubdate": "2026-09-13T12:17:16.237Z",
  "executiveSummary": "A critical access control vulnerability has been identified in the PHPGurukul Bank Locker Management System 1.0, specifically within the sidebar.php file. This flaw originates from improper validation of the UserType argument, allowing unauthorized users to manipulate application logic and gain access to restricted administrative functionalities.\nThe vulnerability is classified as an Improper Access Control issue. It poses a significant security risk, as the attack can be launched remotely without the need for sophisticated infrastructure. Because a functional exploit has been released to the public, the likelihood of malicious exploitation is high. Successful exploitation allows an attacker to bypass intended authentication and authorization barriers, potentially leading to unauthorized data access, system modification, or administrative privilege escalation. Organizations utilizing this version of the Bank Locker Management System are exposed to unauthorized manipulation of the application's interface and restricted features, which undermines the integrity and confidentiality of the entire locker management platform.",
  "technicalDetails": "The vulnerability resides within the sidebar.php component of the PHPGurukul Bank Locker Management System 1.0. The root cause of this security flaw is the failure of the application to strictly enforce server-side validation and authorization checks on the UserType parameter when rendering the administrative or user navigation interface.\nIn a secure implementation, the application should derive the user's role and associated navigation permissions from a trusted session token or backend database reference. However, the current architecture appears to rely on user-supplied or easily manipulatable input via the UserType argument. An attacker can perform an enumeration or manipulation attack by intercepting or modifying the request parameters passed to sidebar.php. By injecting modified values into the UserType argument, an attacker can trick the server-side logic into rendering elements, modules, or hidden links that are intended solely for users with higher privilege levels, such as administrators.\nThe attack flow proceeds as follows: First, the attacker identifies that the application uses the UserType argument to control the visibility of navigation items. Second, the attacker manipulates the request, typically via HTTP parameter tampering or URL modification, to alter the value of UserType to an administrative identifier. Third, the server processes the tainted input without verifying if the requesting user's session possess the necessary privileges associated with that role. Finally, the server generates the response containing the interface elements or links linked to the higher-privilege role.\nThis vulnerability is critical because it functions as an authorization bypass. By successfully manipulating the sidebar, an attacker gains visibility into administrative panels, sensitive system configuration modules, or other internal resources that were supposed to be hidden. Once these restricted paths are exposed, the attacker may navigate to these administrative functions. If those backend functions also lack robust authorization checks, the attacker can move from a simple information disclosure (viewing the menu) to full administrative compromise (executing administrative actions). This is a remote, unauthenticated-to-authenticated (depending on the implementation context) attack that exploits a fundamental flaw in the application's trust model regarding client-provided input for session and access control management."
}