CVE-2026-110098 in Jorani
Summary
by MITRE • 10/13/2026
Jorani before 1.0.4 contains an insecure direct object reference vulnerability that allows authenticated users to modify, delete, and view other employees' requests by authorizing by operation name only. Attackers can supply numeric request ids to Leaves::edit(), Extra::edit(), Leaves::delete(), Extra::delete(), and Leaves::history() to tamper with colleagues' leave and overtime requests and read leave history.
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Analysis
by VulDB Data Team • 10/13/2026
The vulnerability identified in Jorani versions prior to 1.0.4 represents a classic insecure direct object reference flaw, commonly categorized under CWE-639. This security defect arises from the application's failure to perform proper authorization checks on user-supplied input when accessing internal objects or resources. Specifically, the system relies exclusively on operation names and numeric identifiers for request IDs to determine access permissions, rather than validating whether the authenticated user has legitimate ownership or administrative rights over the specific resource being accessed. This architectural oversight allows any logged-in user to manipulate data belonging to other employees by simply guessing or iterating through sequential integer values assigned to leave and overtime requests.
Technically, the flaw manifests in several critical endpoints within the application's codebase, including Leaves::edit(), Extra::edit(), Leaves::delete(), Extra::delete(), and Leaves::history(). When a user interacts with these functions, the backend processes the provided numeric request ID without cross-referencing it against the identity of the currently authenticated session. Consequently, an attacker can supply arbitrary identifiers to modify leave balances, delete pending or approved requests from colleagues' records, or view sensitive personal history data such as past leave patterns and overtime logs. This lack of object-level authorization effectively bypasses the intended access control mechanisms, turning standard CRUD operations into tools for unauthorized data manipulation and exfiltration.
The operational impact of this vulnerability is significant within an organizational context involving employee management systems. Unauthorized modification or deletion of leave requests can disrupt workforce planning, cause payroll discrepancies due to incorrect overtime calculations, and create legal liabilities if employment records are tampered with. Furthermore, the ability to view other employees' leave history constitutes a serious privacy violation, potentially exposing sensitive personal information such as medical leaves or family emergencies. This scenario aligns with MITRE ATT&CK techniques related to Privilege Escalation via Insecure Direct Object References and Data Exfiltration from Local System Resources, highlighting how internal application logic flaws can lead to substantial data integrity and confidentiality breaches even without external network exploitation.
To mitigate this vulnerability, developers must implement robust object-level authorization checks at every point where user-supplied identifiers are processed. This involves verifying that the authenticated user's identity matches the owner of the requested resource or confirming they possess elevated administrative privileges before allowing any read, update, or delete operations. Additionally, adopting non-sequential, unpredictable unique identifiers for internal records can reduce the risk of enumeration attacks, although this is a secondary defense and does not replace proper access control validation. Upgrading to Jorani version 1.0.4 or later resolves these issues by patching the underlying authorization logic in the affected endpoints. Organizations should also enforce strict input validation and consider implementing security headers and monitoring for anomalous patterns of request ID iteration as part of a defense-in-depth strategy.