CVE-2026-94113 in ERPNext
Summary
by MITRE • 09/20/2026
Frappe ERPNext versions before 15.121.0 and 16.x before 16.34.0 contain an information disclosure vulnerability in whitelisted timesheet endpoints that fail to enforce doctype permissions. Authenticated attackers can call get_projectwise_timesheet_data, get_timesheet_detail_rate, and get_timesheet endpoints to enumerate and retrieve billable time logs including project names, billing amounts, and work descriptions without proper authorization checks.
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Analysis
by VulDB Data Team • 09/20/2026
The vulnerability identified in Frappe ERPNext versions prior to 15.121.0 and 16.x prior to 16.34.0 represents a critical failure in access control mechanisms within the application's timesheet module. This flaw allows authenticated users to bypass intended permission checks on specific whitelisted API endpoints, leading to unauthorized information disclosure. The core technical issue stems from the improper enforcement of doctype-level permissions for functions that are exposed via public-facing or semi-public APIs. In a properly secured enterprise resource planning system, access to sensitive operational data such as timesheets must be strictly governed by role-based access controls and object-level security rules. However, in this instance, the backend logic fails to validate whether the requesting user has explicit permission to view the specific project or time log being accessed before returning the data. This architectural oversight effectively neutralizes the protective measures designed to restrict visibility of billable hours and associated financial details to authorized personnel only.
The operational impact of this vulnerability is significant for organizations relying on ERPNext for business operations, particularly those with strict confidentiality requirements regarding client projects and internal billing structures. An authenticated attacker can exploit three specific endpoints: get_projectwise_timesheet_data, get_timesheet_detail_rate, and get_timesheet. By invoking these functions without proper authorization checks, the attacker can enumerate a comprehensive list of active projects along with their associated names. Furthermore, the vulnerability allows for the extraction of granular billing amounts linked to individual tasks or time entries, as well as detailed work descriptions that may reveal proprietary methodologies, client identities, or internal operational workflows. This level of information disclosure not only compromises financial data integrity but also provides adversaries with valuable intelligence that could facilitate further attacks, such as targeted phishing campaigns against identified clients or competitive espionage regarding project scopes and pricing strategies.
From a classification perspective, this vulnerability aligns closely with CWE-284, which describes Improper Access Control, specifically the failure to enforce restrictions on authenticated users for specific resources. It also maps to ATT&CK technique T1005, Data from Local System Retrieval, as it involves an attacker gathering sensitive information directly from the application's database through legitimate but misconfigured API interfaces. The absence of adequate authorization checks at the endpoint level means that any user with a valid account can potentially access data belonging to other users or projects they are not supposed to see. This undermines the principle of least privilege and exposes the organization to risks associated with sensitive data exposure, including potential regulatory non-compliance if client data is involved in jurisdictions governed by strict privacy laws such as GDPR or HIPAA.
Mitigation strategies must prioritize immediate patching to the latest stable versions of Frappe ERPNext, specifically version 15.121.0 and later for the v15 branch, and version 16.34.0 and later for the v16 branch, where these permission checks have been corrected. In environments where upgrading is not immediately feasible, administrators should implement network-level controls such as Web Application Firewalls to monitor and restrict access to the identified endpoints based on user roles or IP addresses if possible. Additionally, a thorough audit of custom scripts and whitelisted functions within the ERPNext instance is recommended to ensure no other similar patterns exist where doctype permissions are bypassed in API responses. Regular security assessments focusing on broken object level authorization flaws will help identify and remediate such vulnerabilities before they can be exploited by malicious actors seeking to harvest sensitive business intelligence.