CVE-2026-94495 in jshERP
Summary
by MITRE • 09/21/2026
jshERP through 3.6 fails to properly validate user privileges in SystemConfigService.updateSystemConfig, allowing authenticated users to modify tenant system configuration. Attackers can rewrite or delete tenant-wide settings covering company identity, stock rules, approval behavior, and printing configuration through the systemConfig endpoint.
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Analysis
by VulDB Data Team • 09/21/2026
The vulnerability identified in jshERP versions up to 3.6 represents a critical failure in access control mechanisms within the SystemConfigService.updateSystemConfig method. This flaw allows authenticated users who possess insufficient privileges to manipulate core tenant-wide configurations, effectively bypassing intended role-based restrictions. The root cause lies in the application's inability to properly validate whether the requesting user has the necessary administrative rights or specific permissions required to alter system-level settings that affect the entire organization rather than just their individual workspace. This lack of server-side authorization checks means that any authenticated session can invoke this endpoint and modify parameters that should be restricted to high-privilege administrators, creating a significant security gap in the application's privilege management architecture.
From a technical perspective, the vulnerability manifests through the systemConfig API endpoint, which serves as the interface for updating various configuration parameters. The flaw enables attackers to rewrite or delete critical settings governing company identity details, stock rule definitions, approval workflow behaviors, and printing configurations. By exploiting this insecure direct object reference combined with broken access control, an attacker can alter how the ERP system operates at a foundational level. For instance, modifying stock rules could lead to inaccurate inventory tracking and financial reporting errors, while changing approval behavior might allow unauthorized transactions to bypass standard oversight mechanisms. Similarly, altering company identity settings or printing configurations can disrupt operational workflows and compromise data integrity across all users within that tenant environment.
The operational impact of this vulnerability is severe due to its potential for widespread disruption and data manipulation. Since the affected configurations are tenant-wide, a single successful exploitation by an authenticated user with low privileges can affect every member of the organization using the jshERP instance. This capability undermines the principle of least privilege and allows lateral movement within the application's administrative functions without requiring elevated credentials initially. Attackers could use this access to hide malicious activities by altering audit trails or approval logs, manipulate financial data through stock rule changes, or cause denial of service conditions by misconfiguring system parameters that affect stability. The ability to delete these settings entirely can also lead to significant downtime and require complex recovery procedures from backups if no redundant configuration management is in place.
This vulnerability aligns with CWE-269, which describes Improper Privilege Management, specifically where the software does not perform sufficient checks when elevating privileges or handling administrative functions. It also relates closely to CWE-862, Missing Authorization, as the application fails to enforce access control policies on sensitive resources like system configuration data. In terms of offensive security frameworks such as MITRE ATT&CK, this behavior corresponds to T1078 Valid Accounts and potentially T1484 Domain Policy Modification if the changes affect broader organizational rules within a domain context. The exploitation path typically involves authenticating with standard user credentials and then sending crafted requests to the systemConfig endpoint to overwrite or remove critical configuration values that should be immutable for non-administrative roles.
Mitigation strategies must focus on implementing robust server-side authorization checks before processing any updates to system configurations. Developers should ensure that every request to update tenant-wide settings verifies that the authenticated user holds explicit administrative privileges or specific permission flags designated for such actions. Implementing role-based access control (RBAC) with strict enforcement at the service layer is essential, ensuring that methods like SystemConfigService.updateSystemConfig reject requests from users lacking the requisite authority regardless of their authentication status. Additionally, introducing multi-factor authentication for administrative functions and logging all configuration changes can provide better visibility and deterrence against unauthorized modifications. Regular security audits and penetration testing focused on privilege escalation paths will help identify similar gaps in other parts of the application before they can be exploited by malicious actors seeking to compromise organizational integrity through ERP system manipulation.