CVE-2026-41308 in PasswordPusher
Summary
by MITRE • 05/08/2026
Password Pusher is an open source application to communicate sensitive information over the web. Prior to versions 1.69.3 and 2.4.2, a security issue in OSS PasswordPusher allowed unauthenticated creation of file-type pushes through a generic JSON API create path under certain configurations. This could bypass the intended authentication boundary for file push creation. This issue has been patched in versions 1.69.3 and 2.4.2.
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Analysis
by VulDB Data Team • 05/10/2026
Password Pusher represents a legitimate open source tool designed to facilitate secure communication of sensitive information over web platforms, however a critical security vulnerability was discovered in versions prior to 1.69.3 and 2.4.2 that fundamentally compromised its intended security model. The vulnerability stemmed from improper access control implementation within the application's generic JSON API create path, which allowed any unauthenticated user to submit requests for file-type pushes without proper authentication verification. This flaw specifically manifested under certain configuration conditions where the application failed to enforce the expected authentication boundaries that should have prevented unauthorized file creation operations, effectively creating a backdoor for malicious actors to bypass the application's core security controls. The technical nature of this vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems, and represents a classic case of broken access control where the application's authorization mechanisms were insufficiently enforced at the API endpoint level.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data exposure and system compromise scenarios. An attacker exploiting this flaw could create and upload sensitive files to the Password Pusher service without requiring legitimate credentials, potentially leading to the exposure of confidential information that the application was designed to protect. The vulnerability's persistence across multiple version lines indicates a fundamental flaw in the application's authentication flow that could have been leveraged to create persistent access points for unauthorized users. This particular weakness creates a pathway for attackers to potentially establish footholds within environments where Password Pusher is deployed, particularly in scenarios where the application serves as a critical component for sensitive data handling and communication. The issue also demonstrates a failure in the principle of least privilege, as the API endpoint was not properly enforcing the required authentication checks that should have been in place to prevent unauthorized file creation operations.
Security practitioners should consider this vulnerability within the context of broader attack patterns found in the MITRE ATT&CK framework, specifically mapping to techniques involving privilege escalation and initial access through API endpoints. The vulnerability's exploitation would likely involve crafting malicious JSON requests to the affected API path, potentially using automated tools to probe and test for the presence of this authentication bypass. The patch implemented in versions 1.69.3 and 2.4.2 addressed the core issue by enforcing proper authentication checks at the API endpoint level, ensuring that all file creation operations require valid authentication credentials before proceeding with the actual file processing. Organizations utilizing Password Pusher should prioritize immediate deployment of these patched versions and conduct thorough security assessments of their existing deployments to verify that no unauthorized access has occurred. Additionally, system administrators should review their application configurations to ensure that the authentication boundaries are properly enforced and that no other similar access control flaws exist within the application's API endpoints, as the presence of this vulnerability suggests potential gaps in the overall security architecture that may require additional remediation efforts.