CVE-2025-49334 in MyD Delivery Plugin
Summary
by MITRE • 12/31/2025
Authorization Bypass Through User-Controlled Key vulnerability in Eduardo Villão MyD Delivery allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects MyD Delivery: from n/a through 1.3.7.
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Analysis
by VulDB Data Team • 12/31/2025
The CVE-2025-49334 vulnerability represents a critical authorization bypass flaw that exploits incorrectly configured access control security levels within the MyD Delivery application developed by Eduardo Villão. This vulnerability stems from improper handling of user-controlled keys that should normally serve as security mechanisms to validate user permissions and access rights. The flaw allows malicious actors to manipulate authentication tokens or keys that are meant to control access to sensitive application functions, potentially enabling unauthorized data access, modification, or deletion operations. The vulnerability affects all versions of MyD Delivery from the initial release through version 1.3.7, indicating a persistent security weakness that has not been adequately addressed in the application's access control implementation.
The technical implementation of this vulnerability demonstrates a fundamental flaw in how the application processes user-provided keys or tokens for authorization purposes. When users submit keys that should be validated against legitimate access control policies, the system fails to properly validate these inputs, allowing attackers to craft or manipulate keys that bypass normal authentication checks. This type of flaw typically occurs when the application relies on user-controlled data without sufficient sanitization, validation, or cryptographic verification mechanisms. The vulnerability creates a path where unauthorized users can escalate their privileges or gain access to resources they should not be permitted to access, essentially undermining the core security model of the application.
The operational impact of CVE-2025-49334 extends beyond simple unauthorized access, potentially enabling more sophisticated attacks that leverage the bypassed authorization controls. An attacker exploiting this vulnerability could access sensitive customer data, manipulate delivery records, alter user permissions, or even compromise the entire application's data integrity. The scope of potential damage depends on the specific functionality protected by the flawed authorization mechanism, but given that this affects a delivery management system, the implications could include privacy breaches, financial fraud, and disruption of critical logistics operations. The vulnerability's persistence across multiple versions suggests that the underlying architectural flaw has not been properly addressed in the application's security design.
Security mitigations for this vulnerability should focus on implementing robust input validation and cryptographic key management practices. The application must enforce strict validation of all user-controlled keys, ensuring that they are properly authenticated and authorized before being accepted as legitimate access tokens. This includes implementing proper key rotation mechanisms, cryptographic signing of access tokens, and ensuring that the authorization system performs comprehensive checks against legitimate user credentials and roles. Organizations should also implement principle of least privilege controls, where even if a key is compromised, its scope of access is limited to prevent widespread damage. The vulnerability aligns with CWE-285, which addresses improper authorization issues, and could potentially be leveraged as part of broader attack chains that map to ATT&CK techniques involving privilege escalation and credential access. Regular security audits and penetration testing should be conducted to identify similar authorization bypass vulnerabilities that may exist in the application's broader codebase.