CVE-2026-107018 in Ghost Commander File Manager
Summary
by MITRE • 10/29/2026
Insecure permissions in Ghost Commander File Manager versionCode 479 allows unauthorized attackers to arbitrarily read and write files inside the commander's private storage.
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Analysis
by VulDB Data Team • 10/29/2026
The vulnerability identified in Ghost Commander File Manager, specifically within application build version code 479, represents a critical failure in Android operating system security mechanisms regarding file access controls. This flaw stems from an insecure configuration of internal storage permissions, which allows any other installed application on the same device to bypass standard sandboxing restrictions and interact directly with the private data directory designated for Ghost Commander. In the Android ecosystem, applications are typically isolated by default, meaning their private files are accessible only to that specific application instance identified by its unique user ID. However, when an application incorrectly configures its file modes or exports components without proper permission checks, it creates a pathway for cross-application data leakage and manipulation.
From a technical perspective, this issue aligns with the Common Weakness Enumeration category CWE-732: Incorrect Permission Assignment for Critical Resource. The root cause lies in the improper setting of file permissions within the application's manifest or runtime initialization code. Instead of restricting access to owner-only read-write privileges, the files are likely configured with world-readable and world-writable flags, such as MODE_WORLD_READABLE or MODE_WORLD_WRITEABLE, which were deprecated precisely because they pose significant security risks. This misconfiguration effectively neutralizes the Android sandbox model for this specific application's data store, treating private user information as if it were public shared storage accessible to all processes on the device.
The operational impact of this vulnerability is severe and multifaceted. An attacker with a malicious or compromised third-party app installed on the victim's device can arbitrarily read sensitive files stored by Ghost Commander. This includes potentially confidential documents, images, logs containing session tokens, or configuration data that reveals user habits and network configurations. Furthermore, the ability to write arbitrary files allows an attacker to inject malicious content into directories monitored by the file manager, potentially leading to further exploitation vectors such as path traversal attacks if other components of the system process these modified files without validation. This dual capability for both information disclosure and integrity violation significantly elevates the risk profile from a simple data leak to potential remote code execution or privilege escalation scenarios depending on how the compromised files are utilized by higher-privilege processes.
In terms of threat modeling, this vulnerability facilitates actions consistent with the MITRE ATT&CK technique T1530: Data from Cloud Storage Object Misconfiguration, adapted for local mobile storage contexts. It also relates to T1005: Data from Local System, as it enables unauthorized data exfiltration without requiring network access or user interaction beyond initial installation of a malicious app. The lack of authentication and authorization checks means that the attack surface is broadened significantly, allowing any application with minimal permissions to exploit this flaw silently in the background, often without triggering standard security alerts or user notifications.
To mitigate this vulnerability, developers must ensure that all internal files are created using MODE_PRIVATE, which restricts access exclusively to the creating application. It is imperative to audit the AndroidManifest.xml and runtime file operations for any instances of world-readable or writable modes. Additionally, implementing strict permission checks on exported activities, services, or broadcast receivers can prevent unauthorized components from triggering actions that might expose sensitive data. For users affected by this issue in version 479, immediate action involves updating to a patched version where these permissions have been corrected, uninstalling the application if no update is available, and reviewing installed apps for any suspicious behavior that may indicate exploitation of this flaw. Regular security audits focusing on file system access controls are essential to prevent similar misconfigurations in future releases.