Description

CRMEB contains an authentication bypass vulnerability in the verifyAuth() method of SystemRoleServices.php that returns true from both conditional branches. Sub-administrators and accounts with no roles can access restricted admin endpoints by exploiting the inert role check that always permits requests.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.3",
  "pubDate": "2026-09-03T15:17:40.417Z",
  "pubdate": "2026-09-03T15:17:40.417Z",
  "executiveSummary": "This vulnerability is an authentication bypass flaw residing within the SystemRoleServices.php component of the CRMEB application. The defect is rooted in the logical implementation of the verifyAuth() method, which improperly evaluates access control conditions, resulting in an unconditional authorization grant.\nThe vulnerability allows unauthorized entities, including sub-administrators and unprivileged accounts, to bypass intended role-based access control (RBAC) mechanisms. By exploiting this flaw, attackers can access restricted administrative endpoints that should otherwise be protected. The risk implication is critical, as it undermines the entire security boundary of the administrative interface, potentially leading to unauthorized data exfiltration, full administrative control over the application, and complete compromise of the backend management system.\nExploitation does not require elevated privileges; any authenticated user, regardless of their role assignment, can leverage this flaw to elevate their effective permissions to that of a super-administrator by traversing endpoints guarded by the broken verification method. This represents a significant failure in the application's authorization logic, requiring immediate remediation.",
  "technicalDetails": "The vulnerability originates in the SystemRoleServices.php file within the verifyAuth() function. This method is intended to act as a gatekeeper for administrative routes, evaluating whether a user session possesses the requisite permissions to invoke specific system services. However, the logic implemented within this function contains a flawed conditional branching structure.\nSpecifically, the verifyAuth() method evaluates multiple conditional branches to validate user authorization status. In the current implementation, all defined paths—including those meant to handle negative authorization results—are designed to return a boolean 'true' value. This effectively neutralizes the entire security check, as the system perceives every access attempt as valid regardless of the user's role, account status, or internal permission settings.\nThe attack flow begins when an attacker, authenticated as a low-privileged user or a sub-administrator, targets a restricted administrative URL. When the request reaches the server, the application framework invokes the verifyAuth() method to determine if the requester has the authority to interact with the target resource. Because the method unconditionally returns 'true', the system bypasses the intended RBAC verification. The authorization layer assumes the user has already been successfully vetted, allowing the application to proceed with the requested sensitive operation.\nSince the check is bypassable by any user with a valid session, the exploitation process is trivial. An attacker does not need to perform complex payload injections; they simply need to navigate to the desired endpoint or perform a direct HTTP request to the target function. The result is the execution of restricted administrative logic by an unauthorized identity. The impact is comprehensive, as the adversary can manipulate system settings, modify databases, or extract sensitive customer information, effectively achieving total administrative compromise through a simple logical error in the access control provider."
}