CVE-2026-62415 in Membership Pro Plugin
Summary
by MITRE • 07/21/2026
The Joomla extension Membership Pro prior version 4.6.2 did by default allow unauthenticated users to upload media assets.
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Analysis
by VulDB Data Team • 07/21/2026
The vulnerability in Joomla extension Membership Pro prior to version 4.6.2 represents a critical access control flaw that allows unauthenticated users to upload media assets to the system. This issue stems from inadequate authentication checks within the file upload functionality, creating an unauthorized entry point for malicious actors to bypass normal user permissions and system security controls. The flaw exists at the application level where proper session validation and user authorization mechanisms fail to properly verify that uploaded content originates from legitimate authenticated users. According to the Common Weakness Enumeration framework, this vulnerability maps to CWE-285, which specifically addresses improper authorization issues in software applications. The technical implementation appears to lack sufficient input validation and access control enforcement during the file upload process, enabling any internet user to submit media files without presenting valid credentials or access tokens.
The operational impact of this vulnerability extends beyond simple unauthorized file uploads as it creates persistent security risks for Joomla installations using the affected Membership Pro extension. Attackers can exploit this weakness to upload malicious files such as web shells, malware payloads, or other harmful content that could compromise the entire web server infrastructure. The unauthenticated nature of the vulnerability means that no prior access or credentials are required to exploit the flaw, making it particularly dangerous for systems with public-facing web interfaces. This vulnerability aligns with ATT&CK technique T1078 which covers valid accounts usage and can be leveraged as part of broader attack chains where initial compromise leads to persistent backdoor establishment through unauthorized file uploads.
Organizations running affected versions of the Membership Pro extension face significant security exposure since attackers can leverage this vulnerability to establish persistent access to their systems. The uploaded files could contain malicious code that executes within the web server context, potentially leading to complete system compromise, data exfiltration, or serving as a foothold for further lateral movement within network environments. System administrators should immediately assess their deployment status and implement immediate mitigations while planning for the mandatory upgrade to version 4.6.2 or later. The vulnerability demonstrates the critical importance of proper access control implementation in web applications and underscores the necessity of regular security audits to identify similar authorization flaws that could exist in other components of the Joomla ecosystem. Organizations should also consider implementing additional network-level protections such as web application firewalls to detect and block unauthorized file upload attempts while monitoring for suspicious activity patterns associated with media asset uploads.