CVE-2026-19081 Overview
CVE-2026-19081 is a missing authorization vulnerability in the Gastromenum Ticket and QR Menu System. The flaw allows an authenticated user with low privileges to access functionality that is not properly constrained by access control lists (ACLs). The issue affects all versions of Gastromenum Ticket and QR Menu System prior to 2026.08.31.
The vulnerability is classified under [CWE-862] (Missing Authorization) and is exploitable over the network without user interaction. Successful exploitation results in unauthorized read access to information that should be restricted based on user role or permission scope.
Critical Impact
Authenticated attackers can bypass ACL restrictions to access restricted application functionality and disclose confidential data managed by the ticketing and QR menu platform.
Affected Products
- Gastromenum Ticket and QR Menu System versions before 2026.08.31
Discovery Timeline
- 2026-09-04 - CVE-2026-19081 published to NVD
- 2026-09-08 - Last updated in NVD database
Technical Details for CVE-2026-19081
Vulnerability Analysis
The Gastromenum Ticket and QR Menu System fails to enforce authorization checks on one or more application endpoints. An authenticated user can invoke functionality intended for higher-privileged roles because the application does not verify that the requesting principal is permitted to perform the requested action.
The scope of impact is limited to confidentiality. Integrity and availability are not affected, indicating the exposed functionality permits data retrieval rather than modification. Common examples of such flaws include direct object access, administrative viewers exposed to standard users, or reporting endpoints that omit role checks.
At the time of publication, no public exploit code is available and the flaw is not listed in the CISA Known Exploited Vulnerabilities catalog.
Root Cause
The root cause is missing server-side authorization enforcement. The application likely relies on client-side controls or assumes authentication alone is sufficient to gate access. As a result, any authenticated session can reach protected functions by issuing direct requests to the underlying endpoints.
Attack Vector
An attacker requires a valid low-privilege account on the target instance. Once authenticated, the attacker sends crafted HTTP requests directly to functionality that should be restricted. No user interaction and no elevated privileges are required beyond initial authentication. See the Siber Güvenlik Notification TR-26-1012 for the vendor coordination notice.
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Stop Identity AttacksDetection Methods for CVE-2026-19081
Indicators of Compromise
- Requests from low-privilege user sessions to administrative or management endpoints of the Gastromenum application.
- Unusual volumes of successful HTTP responses to endpoints that are typically accessed only by administrator accounts.
- Access patterns where a single authenticated user enumerates sequential resource identifiers in ticket or menu APIs.
Detection Strategies
- Review web server and application logs for authenticated requests that succeed against endpoints outside the requesting user's assigned role scope.
- Correlate session identifiers with user role attributes to identify privilege boundary violations.
- Deploy web application firewall rules that flag direct object access attempts and role-scope mismatches for the Gastromenum application paths.
Monitoring Recommendations
- Enable verbose access logging on the Gastromenum application server, including authenticated user identity and requested resource path.
- Forward application and reverse proxy logs to a centralized analytics platform for behavioral baselining of per-role access patterns.
- Alert on repeated 2xx responses to endpoints that historically returned 403 for the same user account.
How to Mitigate CVE-2026-19081
Immediate Actions Required
- Upgrade the Gastromenum Ticket and QR Menu System to version 2026.08.31 or later.
- Audit existing user accounts and revoke unused or unnecessary low-privilege access to reduce the attacker pool.
- Review recent application logs for evidence of unauthorized access to restricted functionality.
Patch Information
The vendor has released a fixed build in version 2026.08.31. Administrators should apply the update as soon as possible. Coordination details are published in the Siber Güvenlik Notification TR-26-1012.
Workarounds
- Restrict network access to the Gastromenum management interface to trusted administrative networks using firewall or reverse proxy rules.
- Enforce strong authentication requirements and rotate credentials for any accounts that may have been used to test the affected endpoints.
- Deploy a web application firewall policy that blocks unauthenticated or low-privilege access to administrative URL paths until the patch is applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
