CVE-2025-59591 in wpDiscuz Plugin
Summary
by MITRE • 09/22/2025
Missing Authorization vulnerability in AdvancedCoding wpDiscuz allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects wpDiscuz: from n/a through 7.6.33.
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Analysis
by VulDB Data Team • 09/22/2025
The vulnerability identified as CVE-2025-59591 represents a critical missing authorization flaw within the AdvancedCoding wpDiscuz plugin, which is a widely used commenting system for wordpress platforms. This security weakness stems from incorrectly configured access control security levels that fail to properly validate user permissions before granting access to sensitive administrative functions. The vulnerability affects all versions of wpDiscuz from the initial release through version 7.6.33, indicating a prolonged period during which this authorization gap has existed, potentially exposing countless wordpress installations to unauthorized access. The flaw operates at the application level where proper authentication checks are bypassed, allowing malicious actors to exploit the system without proper credentials.
The technical implementation of this vulnerability manifests through insufficient validation of user roles and permissions within the wpDiscuz plugin architecture. When users attempt to access administrative functions or modify comment settings, the system fails to properly verify whether the requesting user possesses the necessary privileges to perform such operations. This misconfiguration creates a pathway for unauthorized individuals to execute privileged actions, potentially leading to complete compromise of the commenting system and underlying wordpress installation. The vulnerability aligns with CWE-284, which specifically addresses improper access control mechanisms where systems fail to properly enforce authorization checks for protected resources.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it can enable attackers to manipulate comment moderation settings, approve spam comments, delete legitimate user comments, or even gain access to sensitive configuration data. Attackers could leverage this weakness to disrupt content management workflows, inject malicious comments, or use the compromised system as a foothold for further attacks on the broader wordpress environment. The attack surface is particularly concerning given that wpDiscuz is integrated into numerous wordpress installations, making this vulnerability potentially scalable across multiple targets. This issue directly maps to ATT&CK technique T1078.004 which covers valid accounts obtained through phishing or credential theft, where the missing authorization allows unauthorized access without proper credential validation.
Organizations affected by this vulnerability should immediately implement mitigations including updating to the latest available version of wpDiscuz where the authorization flaw has been patched, conducting thorough access control reviews of their wordpress installations, and implementing additional monitoring for unusual administrative activities. Security teams should also consider implementing network segmentation to limit access to administrative functions and establish more robust logging mechanisms to detect unauthorized access attempts. The vulnerability underscores the importance of regular security audits and proper access control configuration practices, particularly for plugins that handle user-generated content and administrative functions within wordpress environments.