EUVD-2026-77012
GHSA-h827-vf5f-hc9f
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessObtain valid low-privilege user account
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DeliveryAuthenticate to web application
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ExploitSubmit CRUD request to MenpiaodingdanController.java
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ExecutionReplace own order ID with victim's ID
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ImpactAccess or modify victim's ticket booking record
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Object-level authorization, IDOR prevention
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| Exploitation Conditions | The attacker must hold a valid authenticated session on the Tourism-Management-System instance (PR:L). The affected functionality is the MenpiaodingdanController.java CRUD endpoints, which must be reachable over the network. No special non-default configuration is required beyond having an active user account. Exploitation is limited by the requirement for authentication - unauthenticated access is not possible based on the CVSS vector (PR:L). Impact is confined to ticket order data; no system-level access or code execution is possible. |
| Impact | The official CVSS 4.0 score of 2.1 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/E:P) reflects low individual impact metrics despite network reachability and low-complexity exploitation. Real-world risk is moderate for deployments of this specific application: a logged-in attacker can enumerate or modify other users' ticket orders with no technical barrier beyond guessing or incrementing integer IDs. The low CVSS impact scores are appropriate given the limited blast radius (no remote code execution, no privilege escalation). A public POC exists on GitHub, lowering the bar for exploitation. However, the product is an obscure open-source tourism demo application with minimal production footprint, sharply limiting aggregate exposure. No KEV listing and no EPSS data provided. The most significant risk is to any instance exposed to the internet where untrusted users hold accounts. |
| Exploit ScenarioDerived | An authenticated attacker logs into the tourism management portal with a low-privilege account and submits a ticket order read or update request to MenpiaodingdanController.java, replacing their own order ID with a sequentially guessed integer ID belonging to another user's booking. The server returns or modifies the target record without verifying ownership. A public GitHub issue demonstrates this technique. |
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Alert meAnalysisAIv1 – Sep 13, 2026
Authorization bypass in jaychouchannel's Tourism-Management-System allows authenticated remote users to access or modify ticket order records belonging to other users by manipulating the ID parameter in CRUD operations against MenpiaodingdanController.java. This is a classic Insecure Direct Object Reference (IDOR) pattern where the application fails to verify that the requesting user owns the referenced resource. A publicly available proof-of-concept exists (GitHub issue #9), and a patch has been committed (d44ec3aa0bd2a72c8800e3befb0a9a96a6491b86), though no versioned release is available due to the project's rolling-release approach.
RemediationAI
Apply the patch introduced in commit d44ec3aa0bd2a72c8800e3befb0a9a96a6491b86, which is also tracked in pull request #14 at https://github.com/jaychouchannel/Tourism-Management-System/pull/14. Because no tagged release exists, deployers must update to a build including or superseding this commit. As a compensating control pending patch deployment, restrict access to the application to trusted, authenticated users only - do not expose ticket booking CRUD endpoints to anonymous or untrusted internet users. Additionally, implement server-side ownership checks in all entity retrieval and update operations to ensure the authenticated user's session identity matches the owner of the requested ID.
Affected VersionsENISA
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Technical ContextAI · show details
The affected component is MenpiaodingdanController.java ('ticket booking order controller') within a Java Spring-based tourism management web application (cpe:2.3:a:jaychouchannel:tourism-management-system). CWE-639 (Authorization Bypass Through User-Controlled Key) describes the root cause: the application accepts a user-supplied ID parameter in CRUD endpoints without verifying the authenticated caller's ownership of the referenced record. The PR diff also reveals that CommonController.java lacked SQL identifier validation for dynamic table/column path parameters, and the fix introduces a SqlIdentifierValidator utility to sanitize these inputs - indicating the authorization bypass may be compounded by or related to broader input-validation gaps in the controller layer.
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Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Network-reachable IDOR requiring authentication (PR:L); limited confidentiality and integrity impact on order records; no availability impact described.
Primary rating from Vendor (VulDB).
CVSS VectorVendor: VulDB
Lifecycle Timeline
3DescriptionCVE.org
A vulnerability was found in jaychouchannel Tourism-Management-System up to 8122bf020d91199eddfff3ee02d1632a70a9a132. This issue affects some unknown processing of the file MenpiaodingdanController.java of the component CRUD. The manipulation of the argument ID results in authorization bypass. It is possible to launch the attack remotely. The exploit has been made public and could be used. This product takes the approach of rolling releases to provide continious delivery. Therefore, version details for affected and updated releases are not available. The patch is identified as d44ec3aa0bd2a72c8800e3befb0a9a96a6491b86. It is best practice to apply a patch to resolve this issue.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Vulnrichment
VulDB
How this decision was reached
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SSVC AssessmentENISA
Priority Score
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