CVE-2026-14871 in osTicket
Summary
by MITRE • 07/17/2026
osTicket versions v1.18.3 and v1.17.7 contain a Broken Object Level Authorization (BOLA) leading to Insecure Direct Object Reference (IDOR) in the AJAX ticket-management subsystem.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 07/17/2026
The vulnerability identified in osTicket versions 1.18.3 and 1.17.7 represents a critical authorization flaw that undermines the application's object-level security controls. This issue manifests as a Broken Object Level Authorization (BOLA) condition within the AJAX ticket-management subsystem, creating an insecure direct object reference (IDOR) vulnerability that allows unauthorized access to sensitive data and operations. The flaw occurs when the application fails to properly verify user permissions before granting access to specific ticket resources, enabling malicious actors to manipulate object references and gain access to tickets they should not be authorized to view or modify.
The technical implementation of this vulnerability stems from insufficient input validation and authorization checks within the AJAX endpoints responsible for ticket management operations. When users make requests to these subsystems through asynchronous JavaScript calls, the application does not adequately verify whether the requesting user has proper authorization rights to access or manipulate the targeted ticket objects. This weakness creates a direct pathway where attackers can construct malicious requests using valid ticket identifiers, bypassing normal access controls that would typically restrict such operations to authorized personnel only.
The operational impact of this vulnerability extends beyond simple data exposure to encompass potential system compromise and business disruption. An attacker exploiting this IDOR condition could access confidential customer information, view private communications between support staff and clients, modify ticket statuses, add malicious comments, or even delete important ticket records. The AJAX nature of the subsystem means that these operations can be performed silently in the background without obvious user interaction, making detection more difficult for security monitoring systems. This vulnerability directly violates the principle of least privilege and undermines the integrity of the application's access control mechanisms.
Organizations using affected osTicket versions face significant risk exposure from this authorization flaw, particularly in environments where sensitive customer data is processed through the support ticketing system. The vulnerability aligns with CWE-285, which specifically addresses improper authorization issues in software applications, and maps to ATT&CK technique T1078 for valid accounts and T1566 for social engineering attacks that could leverage this weakness. Security professionals should immediately implement mitigations including thorough input validation, comprehensive access control checks, and regular authorization audits of AJAX endpoints. The most effective immediate solution involves patching to the latest stable versions where the authorization logic has been corrected, combined with implementing proper rate limiting and monitoring of suspicious AJAX activity patterns.
This vulnerability demonstrates the critical importance of proper authorization implementation in web applications, particularly those handling sensitive data through asynchronous interfaces. The flaw highlights how seemingly minor oversights in access control validation can create significant security risks that affect multiple aspects of system integrity and user privacy protection. Organizations should conduct comprehensive security assessments of their ticketing systems, implement robust monitoring for unauthorized access attempts, and ensure all AJAX endpoints undergo rigorous authorization testing before deployment. Regular security training for development teams on secure coding practices and proper authorization handling remains essential to prevent similar issues in future application releases.