CVE-2026-104678 in CP Media Player Plugin
Summary
by MITRE • 10/07/2026
The CP Media Player WordPress plugin before 1.3.4 does not perform a capability check on its settings-page handler, allowing users with only Contributor-level access to create, modify, duplicate and delete the site-wide media player configurations and change a CP Media Player WordPress plugin before 1.3.4 option that should require administrator access.
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Analysis
by VulDB Data Team • 10/07/2026
The vulnerability identified in versions of the CP Media Player WordPress plugin prior to version 1.3.4 represents a critical failure in server-side authorization controls, specifically categorized under CWE-285 Improper Authorization. This flaw stems from an omission in the security architecture of the settings-page handler within the plugin codebase. In secure web application design, any endpoint that modifies system configuration or state must verify that the requesting user possesses sufficient privileges to perform such actions. The CP Media Player plugin fails to implement this essential check, thereby treating all authenticated users equally regardless of their assigned role in the WordPress environment. This architectural oversight allows individuals with minimal access rights, specifically those holding Contributor-level permissions, to bypass administrative restrictions and interact directly with sensitive configuration endpoints.
From a technical perspective, the vulnerability exploits the lack of capability verification during the processing of HTTP requests directed at the plugin's settings interface. In standard WordPress development practices, developers are expected to utilize functions such as current_user_can or similar role-checking mechanisms before executing logic that alters global site options. By neglecting this step, the application inadvertently exposes its internal configuration management system to unauthorized manipulation. A Contributor user, who typically has limited capabilities restricted primarily to managing their own posts and media without affecting broader site settings, is able to execute administrative functions due to the absence of these gatekeeping checks in the plugin's request handling logic.
The operational impact of this vulnerability is significant for any organization relying on WordPress as its content management system while maintaining a multi-user environment with varying levels of access trust. An attacker or malicious insider possessing Contributor-level credentials can create, modify, duplicate, and delete site-wide media player configurations. This capability extends to changing specific plugin options that are intended exclusively for administrator use. Such unauthorized modifications can lead to service disruption by misconfiguring the media playback settings, potentially breaking functionality for end-users accessing the website. Furthermore, it undermines the principle of least privilege, allowing lower-level users to exert control over infrastructure components they should not have access to, which could be leveraged in conjunction with other vulnerabilities to escalate privileges or deface the site.
This type of vulnerability aligns closely with techniques observed in attack patterns such as those described under MITRE ATT&CK ID T1078 Valid Accounts and specifically relates to unauthorized privilege escalation through misconfigured permissions. It highlights a common pitfall in plugin development where developers assume that restricting access via frontend UI elements is sufficient, ignoring the necessity of enforcing these restrictions at the backend API or handler level. The persistence of this flaw across multiple versions indicates a systemic issue within the initial code review and security testing phases of the software development lifecycle for this specific plugin.
To mitigate this vulnerability, immediate action must be taken by upgrading to version 1.3.4 or later, where these authorization checks have been implemented correctly. For environments that cannot immediately upgrade due to compatibility constraints, temporary mitigation strategies should include restricting access to the WordPress admin area using IP whitelisting if feasible, although this is less effective in dynamic network environments. Additionally, implementing a Web Application Firewall with rulesets tuned for detecting unauthorized parameter manipulation on administrative endpoints can provide an additional layer of defense. It is also advisable to audit other plugins installed on the same instance for similar authorization flaws, as this pattern often indicates broader security hygiene issues within the site's plugin ecosystem. Regular security audits and adherence to secure coding standards that mandate explicit permission checks before any state-changing operation are essential preventive measures against such vulnerabilities in future development cycles.