CVE-2026-103096 in GV-Eye
Summary
by MITRE • 10/02/2026
API key is hardcoded and retrievable from the application package. Since Android applications can be reverse engineered, embedding sensitive API credentials directly in the client application may allow unauthorized users to extract and misuse the key.
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Analysis
by VulDB Data Team • 10/02/2026
The presence of a hardcoded Application Programming Interface (API) key within an Android application package represents a critical security misconfiguration that fundamentally undermines the confidentiality and integrity of backend services. In modern software development, particularly for mobile platforms like Android, it is a widely accepted best practice to never embed sensitive credentials directly into client-side code or binary packages. The rationale behind this principle stems from the inherent insecurity of the client environment; unlike server-side applications where source code can be kept secret within a controlled data center, Android application packages are distributed to end-user devices that are entirely under the control of potentially malicious actors. When an API key is hardcoded into the APK file, it becomes static and predictable, allowing anyone with access to the binary to extract it without needing any special privileges or complex exploitation techniques beyond basic reverse engineering capabilities.
The technical flaw lies in the assumption that obfuscation or simple embedding provides sufficient protection for sensitive data. While developers may attempt to obscure keys using string encryption or encoding schemes within the codebase, these measures are easily bypassed by determined attackers utilizing standard decompilation tools such as JADX, APKTool, or Frida. These tools allow analysts to reconstruct the source logic and inspect memory states at runtime, revealing plaintext credentials that were intended to remain secret. This vulnerability is not merely a theoretical risk but a practical reality exploited in numerous real-world scenarios where attackers harvest API keys from popular mobile applications to perform unauthorized actions, such as scraping data, inflating metrics, or accessing premium features without payment. The lack of dynamic key rotation or server-side validation further exacerbates the issue, as the extracted key remains valid until manually revoked by the service provider.
From an operational impact perspective, this vulnerability can lead to severe financial losses and reputational damage for the organization hosting the API services. Unauthorized users who obtain the hardcoded key can impersonate legitimate application instances, consuming bandwidth, processing power, and storage resources on behalf of attackers. This often results in unexpected spikes in cloud infrastructure costs due to excessive API calls. Furthermore, if the API grants access to sensitive user data or administrative functions, the compromise could lead to large-scale data breaches, violating privacy regulations such as GDPR or CCPA. The attacker can also use the key to launch denial-of-service attacks against the backend services by flooding them with requests, thereby disrupting service availability for legitimate users. In some cases, if the API allows modification of user accounts or transactions, the integrity of the entire platform is compromised, leading to fraud and loss of trust among the customer base.
To mitigate this vulnerability, organizations must adopt a zero-trust architecture where no client-side component is trusted with long-term secrets. The primary recommendation is to remove all hardcoded credentials from the application package entirely. Instead, authentication should be handled through secure mechanisms such as OAuth 2.0 flows or short-lived tokens obtained via a dedicated backend service that holds the master keys securely in environment variables or secret management systems like AWS Secrets Manager or HashiCorp Vault. For mobile applications specifically, implementing certificate pinning can help prevent man-in-the-middle attacks during token exchange, while using Android Keystore System to store sensitive data ensures that cryptographic keys are protected by hardware-backed security features when available. Additionally, integrating runtime application self-protection (RASP) techniques can detect and alert on reverse engineering attempts, although this should be viewed as a secondary defense rather than a primary solution. Regular code audits and static analysis tools configured to flag hardcoded secrets in source control repositories are essential preventive measures to ensure that such vulnerabilities do not reach production environments.
This vulnerability aligns with CWE-798: Use of Hard-coded Credentials, which categorizes the use of fixed authentication credentials as a significant weakness due to their predictability and ease of extraction. It also maps directly to MITRE ATT&CK technique T1552.004: Unsecured Credentials, specifically under the sub-category of Private Keys, although applicable broadly to API keys used for service authentication. By addressing this issue through architectural changes rather than simple code fixes, organizations can significantly reduce their attack surface and ensure that sensitive operations remain protected against unauthorized access derived from client-side compromise.