CVE-2026-38529: Webkul Krayin CRM Auth Bypass Vulnerability

CVE-2026-38529 Overview

A Broken Object-Level Authorization (BOLA) vulnerability has been identified in Webkul Krayin CRM v2.2.x. The flaw exists in the /Settings/UserController.php endpoint, where insufficient authorization checks allow authenticated attackers to arbitrarily reset user passwords and perform full account takeover by supplying a crafted HTTP request.

Critical Impact

Authenticated attackers can bypass authorization controls to reset passwords for any user account, leading to complete account takeover and potential compromise of sensitive CRM data.

Affected Products

• Webkul Krayin CRM v2.2.x
• Krayin Laravel CRM (affected versions)

Discovery Timeline

• 2026-04-14 - CVE CVE-2026-38529 published to NVD
• 2026-04-14 - Last updated in NVD database

Technical Details for CVE-2026-38529

Vulnerability Analysis

This vulnerability is classified under CWE-269 (Improper Privilege Management), manifesting as a Broken Object-Level Authorization (BOLA) issue. The vulnerable endpoint /Settings/UserController.php fails to properly verify that the authenticated user has authorization to modify the target user account before processing password reset requests.

In a properly secured implementation, the application should verify that the requesting user has appropriate privileges to modify another user's credentials. However, the vulnerable code path allows any authenticated user to manipulate the request parameters to target arbitrary user accounts, bypassing the intended access control mechanisms.

The attack is network-accessible and requires low privileges (any authenticated user), making it particularly dangerous in multi-user CRM environments where various users with different privilege levels access the system.

Root Cause

The root cause of this vulnerability lies in missing or inadequate object-level authorization checks within the UserController.php file. The endpoint processes user modification requests without validating whether the authenticated user has legitimate authority over the target user object. This allows horizontal privilege escalation where a low-privileged user can affect accounts of users at the same or higher privilege levels.

Attack Vector

The attack requires an authenticated session within the Krayin CRM application. An attacker with valid credentials (even a low-privileged account) can craft a malicious HTTP request to the /Settings/UserController.php endpoint, specifying a target user ID that differs from their own. By manipulating the user identifier parameter in the password reset functionality, the attacker can reset the password of any user account, including administrator accounts, leading to complete account takeover.

The network-based attack vector combined with low attack complexity makes this vulnerability highly exploitable in production environments.

Detection Methods for CVE-2026-38529

Indicators of Compromise

• Unusual password reset activity in application logs, particularly for privileged accounts
• Multiple password reset requests originating from a single user session targeting different user IDs
• Unexpected account lockouts or password change notifications reported by users
• Access log entries showing requests to /Settings/UserController.php with modified user ID parameters

Detection Strategies

• Implement application-level logging to track all user modification requests, including the source user and target user IDs
• Deploy Web Application Firewall (WAF) rules to detect parameter manipulation attempts on user management endpoints
• Configure SIEM alerts for anomalous patterns in password reset activities
• Monitor for unauthorized access attempts following suspicious password reset events

Monitoring Recommendations

• Enable verbose logging on the Krayin CRM application to capture all requests to user management endpoints
• Implement real-time alerting for password reset operations targeting administrator or privileged accounts
• Review access logs regularly for patterns indicating BOLA exploitation attempts
• Deploy endpoint detection solutions to monitor for post-exploitation activity following potential account takeover

How to Mitigate CVE-2026-38529

Immediate Actions Required

• Restrict access to the Krayin CRM application to trusted networks until a patch is applied
• Review user accounts for signs of unauthorized password changes and reset compromised credentials
• Enable multi-factor authentication (MFA) to provide an additional layer of protection against account takeover
• Audit recent application logs for evidence of exploitation attempts
• Consider temporarily disabling the user management functionality for non-administrator users

Patch Information

Refer to the Krayin Laravel CRM GitHub repository for the latest security updates and patch information. Users should monitor the official repository for security releases addressing this vulnerability.

For detailed technical information about this vulnerability, see the GitHub Security Advisory for CVE-2026-38529.

Workarounds

• Implement network-level access controls to limit who can reach the CRM application
• Add custom middleware to enforce strict object-level authorization checks on user management endpoints
• Deploy a reverse proxy or WAF with rules to validate that user modification requests only target the authenticated user's own account
• Temporarily restrict user management capabilities to a single trusted administrator account

# Example: Restrict access to user management endpoints via Apache configuration
<Location "/Settings/UserController">
    Require user admin
    # Or restrict by IP
    # Require ip 192.168.1.0/24
</Location>