CVE-2026-94496 in jshERP
Summary
by MITRE • 09/21/2026
jshERP through 3.6 fails to validate caller permissions in role management endpoints, allowing authenticated users to modify any role's data scope or delete roles. Attackers can exploit the /role/update and /role/delete endpoints to escalate privileges, change data visibility to all data, and access all business records in the tenant.
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Analysis
by VulDB Data Team • 09/21/2026
The vulnerability identified in jshERP versions through 3.6 represents a critical failure in server-side access control mechanisms within its role management subsystem. This flaw is classified under CWE-284 Improper Access Control, specifically reflecting an Insecure Direct Object Reference (IDOR) scenario where the application fails to verify that the authenticated user initiating a request has sufficient privileges for the specific resource being accessed. The core technical deficiency lies in the backend logic governing the /role/update and /role/delete endpoints. These endpoints accept parameters defining role identifiers and associated data scopes but do not perform adequate authorization checks against the current session's permission set or ownership attributes. Consequently, an authenticated user can manipulate these inputs to target roles belonging to other users or administrative accounts, bypassing intended security boundaries that should restrict such operations to system administrators only.
From a technical perspective, this vulnerability allows for significant privilege escalation and data integrity compromise. By exploiting the /role/update endpoint, an attacker can modify the data scope of any role within the tenant environment. This capability enables the alteration of visibility rules, effectively granting users access to business records that were previously restricted by organizational hierarchy or departmental boundaries. Furthermore, the exploitation of the /role/delete endpoint permits the removal of critical roles from the system. The deletion of administrative or high-privilege roles can disrupt operational workflows and potentially lock out legitimate administrators, leading to a denial of service condition for authorized personnel while simultaneously removing security controls that might have restricted certain actions.
The operational impact of this vulnerability is severe, as it undermines the fundamental principle of least privilege within multi-tenant SaaS environments or enterprise deployments. Attackers can escalate their privileges from standard user accounts to those with administrative capabilities by modifying role definitions to include broader data access rights. This results in a complete compromise of confidentiality for sensitive business records stored within the tenant database. Additionally, the ability to delete roles introduces stability risks and potential availability issues, as critical functional groups may be inadvertently or maliciously removed, disrupting business processes that rely on those specific permission sets.
Mitigation strategies must focus on implementing robust server-side authorization checks at every endpoint handling role modifications. Developers should enforce strict validation of user permissions against the target resource's ownership or required privilege level before processing any update or delete requests. This includes verifying that the requesting user holds a system administrator role or has explicit delegation rights for the specific role being modified. Additionally, implementing an audit logging mechanism to track all changes to role configurations can aid in detecting and responding to unauthorized modification attempts promptly. Upgrading to patched versions of jshERP where these access controls are properly enforced is essential for restoring security integrity. This vulnerability aligns with MITRE ATT&CK technique T1078 Valid Accounts, as it relies on legitimate credentials being used to perform actions outside their intended scope due to insufficient validation logic.