CVE-2026-103078 in JS Help Desk Plugin
Summary
by MITRE • 10/05/2026
Authorization Bypass Through User-Controlled Key vulnerability in Ahmad JS Help Desk js-support-ticket allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects JS Help Desk: from n/a through 4.0.0.
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Analysis
by VulDB Data Team • 10/05/2026
The identified vulnerability represents a critical failure in access control mechanisms within the Ahmad JS Help Desk software, specifically affecting versions ranging from initial releases up to version 4.0.0. This flaw is categorized as an Authorization Bypass Through User-Controlled Key, which indicates that the application fails to properly validate or restrict user permissions when processing requests associated with specific identifiers provided by the client side. In a secure system architecture, authorization checks must be performed server-side based on verified session tokens and role-based access controls rather than relying solely on keys or IDs supplied directly in HTTP parameters. When an attacker can manipulate these keys, they effectively bypass the intended security boundaries that separate administrative functions from standard user operations.
From a technical perspective, this vulnerability stems from insecure direct object references where the application uses a key controlled by the user to determine access rights without sufficient verification against the authenticated session's privileges. For instance, if an API endpoint accepts a ticket ID or configuration key as input and grants elevated permissions based on that value rather than checking whether the current logged-in user has administrative authority, any authenticated user can escalate their privileges. By modifying these keys in intercepted requests, such as through tools like Burp Suite or OWASP ZAP, a low-privilege user can execute actions reserved for administrators, including viewing sensitive support tickets, modifying system configurations, or deleting records. This aligns with CWE-284 Improper Access Control and CWE-639 Authorization Bypass Through User-Controlled Key, highlighting the fundamental misconfiguration of security levels within the application logic.
The operational impact of this vulnerability is severe as it compromises the integrity and confidentiality of the help desk system. Since JS Help Desk often handles sensitive customer information and internal organizational data, unauthorized access can lead to significant privacy breaches. Attackers could exfiltrate confidential support tickets containing personal identifiable information or proprietary business details. Furthermore, the ability to alter security levels allows for persistent backdoors where attackers might modify user roles permanently, ensuring continued access even after password changes. This undermines trust in the system and exposes organizations to regulatory penalties under frameworks like GDPR or HIPAA if protected data is compromised due to such a straightforward exploitation vector.
Mitigation strategies must focus on implementing robust server-side authorization checks that decouple resource identification from permission validation. Developers should ensure that every request requiring elevated privileges undergoes strict verification against the user's assigned roles and permissions stored in secure session variables, rather than trusting input parameters for access decisions. Implementing principle of least privilege ensures that users only have access to resources necessary for their specific role. Additionally, employing anti-CSRF tokens and validating all inputs can prevent manipulation attempts. Upgrading to patched versions where this flaw has been addressed is the most effective immediate remedy, alongside conducting a thorough code review to identify similar patterns in other modules of the application. This vulnerability also maps to MITRE ATT&CK technique T1078 Valid Accounts, as exploitation relies on using legitimate credentials with manipulated context to gain unauthorized access.